Stereo Bluetooth Comes to the iPhone

Apple has finally adopted the bluetooth standard for stereo (called A2DP) in both its laptops and the iPhone. (This was a long time coming!)

I’ve been using this Plantroncs 855 headset for about a month. I’m generally pleased with it. The sound quality is reasonably good for music and great for voice, audio books, podcasts, etc.

The only major flaw is occasional skipping. The music drops out for about a second and then returns. I mostly notice this when walking and/or moving my right arm (which is just above the phone on my hip). It is worse with vigorous exercise and in buildings with intense RF activity (other cell phones and WiFi).

Two problems limit utility with the iPhone: 1) Apple has only implemented part of the control standard called AVRCP (play/pause works, but not next/prev track); and 2) Voice control does not activate with a simple press of the talk button (as it should). By accident I discovered that you have to press and hold the button for about 3 seconds (why?) to get the phone’s attention.

So, life in this arena is improving… but at a slower pace than one would expect. These standards are not new.  I note that prev/next already works with my OSX laptop, so this feature may come with the next rev of the iPhone OS. Better voice control? — I can dream can’t I?

Update 2012: I’ve abandoned this headset because it is too fragile for everyday use. I now use a Jabra Clipper which is not perfect, but is much sturdier.

Catch-22 of the Digital Age

I like to listen to audiobooks on my iPod. I have a subscription to Audible.com and buy one or two books a month. In the beginning things were fine, but about two years ago iTunes stopped remembering my Audible password. I get around this by double-clicking on any Audible file and put in my password when it asks. This fixes the problem long enough to sync. But if I quit iTunes, I start over. If I forget, iTunes automatically deletes the files from my iPod. Needless to say this is a major pain in the butt!

This got me thinking about Digital Rights Management (DRM) and how wrong it is. The cartoonist xkcd sums this up nicely. Damned if you do, damned if you don’t! I stopped buying DRM’d music from the iTunes Store in favor of DRM-free tunes from Amazon.com. As far as I know I don’t have that option for books. Why not?! [The irony here is Audible is now owned by Amazon.]

Thanks to xkcd.com!

June 2009 Update: The iTunes Store has gone DRM-free for music! How about it Audible?

Better Passwords?

Password Entropy GraphThe best passwords are completely random—strong but almost impossible to remember. This report from the National Institute of Standards and Technology (NIST) suggests a better solution—long pass phrases.

Entropy is a measure of password strength. The more entropy a password has, the harder it is to crack. Many systems enforce dictionary and composition rules (numbers, mixed case, punctuation) on short (less than ten character) passwords. This graph on page 23 of the NIST report shows that dictionary rules do not improve longer passwords, and the boost from composition rules is fairly small. A simple twelve character pass phrase (a-z plus spaces) is as strong as an eight character rule-based password, but can be much easier to type and remember. Throw in one digit and you’ve got a very strong credential indeed! I’ve written a quick three step approach for the UF campus system (which unfortunately does not allow spaces).