In this podcast, Setta McCabe from WTCC 90.7 FM and Gordon talk about social media on her weekly radio program. During the show they discussed blogging, Twitter, Facebook, LinkedIn and other social media applications. This is a recording of the interview.

We’ve left Setta’s intro and exit pieces but have removed the public service announcements. Setta is great - and the interview was a lot of fun. We hope you enjoy listening.

 

 

 

 

 

 

 

 

 

 

 

Intro: Apple says the tablet-style iPad computer represents a whole new category of consumer electronic devices. In this podcast Mike reviews the technical specifications of the device and gives his first impressions.

 

Let's start by looking at the Tech Specs of the new iPad

 

Size - How big is this thing?

 

The iPad is about 7 and a half inches wide; 9 and a half inches high; and a sleek looking 1/2 inch thick. There are two models one with WiFi only and the other with Wifi and 3G. The Wifi only model weighs 1.5 pounds - interestingly, the 3G radio adds another 10th of a pound.  

 

What about the hardware? Some people are referring to this thing as a big iPhone or iPod Touch?

 

On the surface, that would appear to be true, but as we'll discuss later, it's not that simple. The iPad has the same dock connector as the iPhone, so many of the existing accessories should still work. Also included are a headphone jack, speaker, microphone, and SIM card tray for the 3G model. The buttons replicate the iPhone (on/off, mute, volume up and down, and home).

 

What about the screen?

 

The screen is 9.7 inches diagonally, with a glossy fingerprint resistant coating. The screen is about the size of two iPhones stacked and oriented horizontally.The resolution is 1024 by 768 which amounts to 132 pixels per inch, compared to the iPhone, which is 480-by-320-pixels with a density of 163 ppi. The smaller density could result in losing some sharpness or clarity as text/objects are scaled up - although people who have used it rave about the display. And obviously, the screen supports multi-touch. 

 

What about capacity?

 

Following along the lines of the iPhone, the iPad is available with 16, 32 and 64 GB flash drives.

 

Does the iPad have senors like the iPhone?

 

Like the iPhone, the iPad contains a 3-axis accelerometer and an ambient light senor, which automatically adjusts the brightness of the display. The only sensor not present is the proximity sensor - but I don't expect people to hold this to their face to face call.

 

What about wireless?

 

As we already discussed, there are two models available (WiFi and WiFI+3G). The WiFi supports older 802.11a, b, and g standards, as well as the newer-faster 802.11n. The fact that it supports 802.11a leads me to believe that the 802.11n is dual-mode, meaning that it will support both 2.4 GHz and 5 GHz frequencies. The 3G - at least for now - is still AT&T's 3G, which theoretically could approach speeds of 7.2 Mbps (HSDPA). Unfortunately, AT&T's High-Speed Downlink Packet Access is not yet widely available. Probably in 2011.

 

What about other carriers?

 

There was a lot of speculation of this event including announcements regarding the end of AT&T exclusive iPhone deal and the addtion of other carriers - most notably Verizon Wireless. This may happen in time for the next version of the iPhone - in June or July. The iPad does use a micro-SIM card that you could swap with another carriers. It would of course have to be a GSM network. I think people also need to realize that a Verizon iPhone is not a technically insignificant task. Verizon's wireless network uses CDMA rather than GSM, which would require an entirely new phone with a CDMA-radio.

 

Bluetooth?

 

The iPad supports Bluetooth 2.1 +EDR (Enhanced Data Rate) which is a pretty speedy 3 MBps - at least compared to earlier 1MBps versions.I expect future versions of the iPad will eventually go to Bluetooh 3.0 +HS, which at 24 MBits will make the iPad the center of home entertainment and media systems - just a thought - no inside knowledge here.

 

What about GPS?

 

Unfortunately the iPad doesn't have a GPS radio. The WiFi -only model tries to use the location of wifi hotspots to triangulate location, while the WiFI+3G model supports assisted GPS and Cellular triangulation. Interestingly, like the iPhone 3GS, the iPad includes a digtial compass - personally, I would rather have GPS than a compass.

 

Battery Life?

 

As you know, Apple has been doing a lot to improve battery life on the MacBook and MacBook Pro line of laptops. It seems like some of this technology has made its way into the iPad, which they are rating at 10 hours (surfing the web with WiFI, watching videos, or listening to music). When people get these in their hands, I'm sure we'll see more realistic numbers - I would think in the 5-7 hour range.

 

What about the processor?

 

Here's where it gets interesting. In April of 2008, Apple purchased a small "boutique" microprocessor design company P.A. Semi.  Since that time, Apple has been able to use that new=found expertise to design and build a new 1GHz Apple A4 custom-designed, high-performance, low-power system-on-a-chip. Based on reports I've read on the speed and responsiveness of the system, this new chip has made a difference. It will be interesting to learn more about the actual chip, but I expect we'll see the same chip running in a new iPhone by June or July.

 

What about the software? 

 

The iPad seems to be running version 3.2 of the iPhone OS. The latest beta of the iPhone SDK is based on 3.2 and includes an iPad simulator. Since the iPad uses the iPhone OS, it is a closed ecosystem much like the iPhone - meaning you can't install any applications you want, as you might on a PC or traditional Mac computer. Instead you are dependent on the iPhone app store for app. Virtually all of the over 140,000 existing apps will run on the iPad - I would expect that apps that depend on iPhone-specific hardware (cellular radio, camera, GPS) will not run on an iPad. iPhone apps will run in native mode in a small window on the iPad and will include a 2x button, which will allow one to double the size of the app. Apple uses a technique call pixel-doubling to achieve this without losing the fidelity of the app. Developers can use the SDK to develop iPad-specific versions of their apps, which can take advantage of the increased screen real estate and will as the room to integrate more expansive multi-touch gestures. Apple demo re-written version of their iWork office suite (Keynote, Pages, and Numbers). These apps have been completely re-written with the iPad in mind and will be available for $10 each. The new apps look pretty slick!

 

What about what's missing?

 

Multi-tasking is something that many people were hoping for. Although it's not part of the 3.2 OS, some think it may be announced as part of iPhone OS 4.0 for a June/July launch. I wouldn't hold my breath. One of my students does multi-tasking on a jailbroken iPhone and tells me it kills the battery. 

 

In terms of hardware, there was lots of speculation about a front-facing webcam or even two cameras. I think a webcam for this sort of device makes sense - turns it into a great web conferencing device. A traditional iPhone-like camera doesn't make as much sense. Imagine trying trying to hold a 10x8 1.5 pound device and take photos - seems clunky. Developers reviewing the new beta (3.2) of the iPhone SDK have noticed references to a camera in the SDK, making it likely that a camera of some sort was planned for this device, but didn't make it into the final build. Some are hopeful that a camera will even show up when this product ships - that would be a nice surprise, but more likely, I think we'll see a front-facing camera in IPad 2.0. Additional speculation included 2 dock connectors, so the device could be docked in portrait or landscape - in the the end just one dock connector for portrait docking.

 

The iPad has no video out port, so there's a dock connector adapter available that purpose, as well as adapters for SD cards and USB devices. If you feel limited by text entry on a virtual keyboard, you can also purchase an optional dock with keyboard, and the iPad will purportedly be compatible with Apple's Bluetooth keyboard.

 

So, what do you think - is this going to go down in history as a revolutionary device?

 

I think it's unfortunate that there was so much hype surrounding this device. No device could live up to all those expectations. In my opinion, this seems today like an evolutionary device, but I think when we look back we will realize the revolutionary nature of the iPad. Clearly it will have all started with the iPhone, but I think the iPad is what Steve Jobs has been working toward all along - we saw a glimmer of that vision in the iPhone, but the iPad and its' successors are the full fruition of that vision. Fundamentally, what I think we're seeing is an inflection point in the historical arc of computing. I'll try to explain it, but I'm still working out the details myself. To date, if you wanted to use a computer, you had to immerse yourself in the details of filesystems, filetypes, settings, configuration, etc. While the hierarchy of files and folders serves as a good metaphor for navigating a computers contents and accessing applications, that GUI interface is sill just an extension of the command line we thought we left behind with DOS. What the iPhone introduced and the iPad now extends is a User Interface where files, folders, and the file system are all obfuscated - they all become abstractions that the generic user doesn't have to worry about or even be aware exist. Your mother and my mother don't want to be troubled by navigating a filesystem to find a document or an application - they just want to tap and run their application or open their document. As this paradigm shift moves forward, there will be users like me and you that will still want and need a filesystem, files and folders, but I think the average user will increasingly move toward this sort of simplified user interface. I've excerpted some interesting thoughts from a variety of pundits.

 

John Gruber makes the comparison between a car with a manual transmission and one with an automatic transmission:

Used to be that to drive a car, you, the driver, needed to operate a clutch pedal and gear shifter and manually change gears for the transmission as you accelerated and decelerated. Then came the automatic transmission. With an automatic, the transmission is entirely abstracted away. The clutch is gone. To go faster, you just press harder on the gas pedal. That’s where Apple is taking computing. A car with an automatic transmission still shifts gears; the driver just doesn’t need to know about it. A computer running iPhone OS still has a hierarchical file system; the user just never sees it.

Jim Stogdill build on Gruber's metaphor, comparing the iPad to the move from traditional autos to the Prius:

The automobile went through a similar evolution. From eminently hackable to hood essentially sealed shut. When the automobile was new, you HAD to be a mechanic to own one. Later, being a mechanic gave you the option of tinkering and adapting it to your specific interests. In fact, that's how most people up until about 1985 learned to be mechanics. The big changes came with the catalytic converter and electronic ignition (and warranty language to match). Now the automobile has reached the point in its development where you don't even have to know whether it has a motor or an engine to use it, but to tinker at all requires highly specialized skills.

one particularly telling phrase:

It's been a long time since most of us have used our computers to do anything approaching "computing," but the iPad explicitly leaves the baggage behind, leaps the conceptual gulf, and becomes something else entirely. Something consumery, media'ish, and not in the least bit intimidating.

Steven Frank discusses Old World versus New World computing and distills Apple's gambit into a few bullets:

The bet is roughly that the future of computing:

·       has a UI model based on direct manipulation of data objects

·       completely hides the filesystem from the user

·       favors ease of use and reduction of complexity over absolute flexibility

·       favors benefit to the end-user rather than the developer or other vendors

·       lives atop built-to-specific-purpose native applications and universally available web apps

Andy Ihnatko's hands-on with the iPad is also worth a read.

 

 

Maybe "decibel" is not part of your normal vocabulary but it is a term we all occasionally read or hear used. Typically it has to do with noise levels - we use decibels to describe loud or soft sounds. US government research even suggests a safe exposure sound limit of 85 decibels for eight hours a day. We frequently hear the term but - have you ever wondered what a "decibel" really is? We take a look in this podcast.

Mike and Gordon discuss the Barnes and Noble Nook and compare it to the Amazon Kindle.

So, what did this guy do?

How do metrics applications handle these spammers?

What can be done to prevent Twitter manipulation?

At the National Science Foundation sponsored Information and Communications Technologies (ICT) combined (The Mid Pacific Center for ICT and The National Center for ICT ) winter conference last month held at the City College of San Francisco, I had the opportunity to interview three key members of the Cisco Systems Packet Tracer Team - Dennis Frezzo, Isaac Majerowicz and Mark Chen.

Packet Tracer is a network simulator used by hundreds of thousands of Cisco Networking Academy students around the world. Recently, Packet Tracer version 5.1 was released - here's so info from an FAQ on the product found on the Packet Tracer website:

• Provides a realistic simulation and visualization learning environment that supplements classroom equipment
• Enables multiuser, real-time collaboration and competition for dynamic learning  
• Enables authoring and localization of structured learning activities such as labs,  demonstrations, quizzes, exams, and games
• Empowers students to explore concepts, conduct experiments, and test their understanding
• Allows students and teachers to design, build, configure, and troubleshoot networks using  virtual equipment  
• Supports a variety of teaching and learning tasks such as lectures, group and individual  labs, homework, and competitions  
• Supports integration with external applications through an API to enhance the functionality  of Packet Tracer in areas such as curriculum and assessment delivery, games, accessibility,  and interfacing with real equipment. 
  

In the interview, the team describes the Packet Tracer product. Part 1 and part 2 of the interview are shown below:

I'm really excited about version 5.1 - especially when you consider the user base. The ability to integrate Packet Tracer 5.1 with external applications will provide some innovative academic and training solutions. You can find out more about the Cisco Network Academy and Packet Tracer here.

The Mid-Pacific Information and Communications Technologies (MPICT) Center is a recently funded National Science Foundation (NSF) – Advanced Technological Education (ATE) Regional Center hosted by City College of San Francisco (CCSF). MPICT's mission is to coordinate, promote and improve the quality and availability of ICT education in a region consisting of Northern California, Northern Nevada, Southern Oregon, Hawaii and the Pacific Territories. Current Regional Partners include: Ohlone College , Santa Rosa Junior College , Cabrillo College and Foothill College.

We've had a great relationship with Pierre, James and CCSF and were fortunate to get them on camera to talk about MPICT at the 2008 SAME-TEC Conference.

MPICT is off to a great start under the leadership and direction of Pierre and James. Contact them for more information at www.mpict.org

German graduate students Erik Tews and Martin Beck have discovered an exploitable hole in WPA, a popular wireless encryption protocol. This week, Tews will present a paper on the topic at the PacSec conference in Tokyo. In this podcast Mike Qaissaunee and I discuss wireless network security and this newly discovered WPA hole.

Here's a list of questions asked during the podcast:

Where is the information for this podcast coming from?

Why is this important?

So, we've now got a security issue with WPA encryption! Before we get to WPA - can you give us a little background on wireless encryption?

So, the first attempt was WEP. Most devices still support it - why should we not use it?

So, that's not good. What did the IEEE do?

What else did the 802.11i group do - what was the second solution?

So, let me make sure I understand. Older wireless devices can be updated to support WPA which includes TKIP. Now, I've heard of WPA2 - what is that?

So, the new products support both but old products only support WPA. I think I've got it! What did Tews and Beck actually crack?

So the problem is with old devices that only support WPA and TKIP and not WPA and AES?

What is the problem with TKIP?

Now, didn't WEP use checksums this way?

The ars technica piece mentioned short packets are ideal - especially ARP broadcasts. Why?

Let me see if I understand, an attacker sniffs a packet, makes minor modifications to affect the checksum, and checks the results by sending the packet back to the access point.

So it is not something we should be worried about?

What can we do to protect our networks?

Can you describe rekeying?

Now, I've heard of this - you need to be careful. You don't want to enable rapid rekeying unless ALL of your clients support IEEE 802.1x and an authentication method (e.g. EAP-TLS) that supports key distribution.

So, let's get to the point here - WPA really is not broken?

Listen to get the answers!

On Oct 1, 2008 Nart Villeneuve and the Information Warfare Monitor released an interesting joint report titled BREACHING TRUST: An analysis of surveillance and security practices on China’s TOM-Skype platform. Villeneuve is CTO of psiphon inc and the psiphon research fellow at the Citizen Lab, Munk Centre for International Studies, University of Toronto. In this podcast we discuss the report, confidentiality and security issues with TOM-Skype, the Chinese version of Skype

Mike: Gordon, Can you tell us a little more about this report?

The Citizen Lab is an interdisciplinary laboratory based at the Munk Centre for International Studies at the University of Toronto, Canada focusing on advanced research and development at the intersection of digital media and world civic politics. The author, Nart Villeneuve's research focuses on International Internet censorship and the evasion tactics used to bypass Internet filtering systems.

Other Questions:

How about some background on Skype in China?

How about some details from the report?

You said these are publically accessible servers - can others besides the Chinese access these servers?

Can you review the major findings from the report?

What kinds of questions has the report raised?

How does the report say the sensorship actually works?

How about some detail on those servers?

The report claims it may be possbile to map users social networks using the logged information. Can you explain?

How has Skype responded?

Bio-Link is an Advanced Technological Education (ATE) Center for Biotechnology that originated in late 1998 with a grant from the National Science Foundation. The Center is located on the campus of City College of San Francisco with office space at the University of California, San Francisco. Regional Bio-Link Centers across the country are located in Seattle, WA; San Diego, CA; San Francisco, CA; Austin, TX; Madison, WI; Graham, NC; and Portsmouth, NH. 

At the SAME-TEC conference this past July, I had the opportunity to interview Bio-Link Director Dr Elaine Johnson. In the interview Elaine discusses the work the Bio-Link Center and Regional Centers are doing to bring students the knowledge and skills essential to the field as well as the ability to continue with more advanced education in math, science and engineering.

My undergraduate background is in Microbiology so I've always had an interest in biotechnology and related fields. If you are faculty and considering starting a biotechnology program or maybe a student thinking about a biotechnology career, you will find her interview very interesting.

Elaine and her Center's work are outstanding! You can get more information on Elaine and Bio-Link here.