I bought my ipt2g about five weeks ago and while overall I love this little piece of hardware, the device has some serious and annoying shortcomings when used as an mp3-player. While every discount mp3-player for 20 bucks has an easy accessable button to switch to the next song the geniuses at Apple tought that the ipt2g does not need such a thing. As consequence, for the simple task to switch to the next song I need to perform four actions - press the Home button, tap/slide to unlock, press next song, press Sleep to lock again. When doing sports or riding the bike, this is a really annoying distraction, thus I normally just let the song run thru. So, I looked for a way to make switching songs easier and I stumbled over the app 'PocketTouch' made by our own beloved forum grinch Skylar which looked promising since it offers the capability to change a song with a simple swipe to the touch screen. I gave this app a try and tested it thoroughly both in a practical field test as well as under more artificial conditions to gather some hard data. Since I thought that my conclusions might also be interesting for others, I decided to write a small review of PocketTouch. So here were go. I downloaded the latest version of PocketTouch (version 3.02) fresh from Cydia which installed without a hitch. I started a song in the MobileMusicPlayer app, started PocketTouch and to my suprise swiping the screen did not do anything. After searching the forum, it turned out that you have to set up PocketTouch first using Settings. Ok, I opened Settings, set up PocketTouch and started it again and voila it showed me the song running at the moment, the volume and the swipes worked as advertised. Swiping left/right changed to the previous/next song, swiping up/down increased and decreased the volume and a double-tap paused the song. Shaking the device changes to a next random song and since I did not wanted this feature I simply diabled the shaker. Great. Since the input is done over touch screen and locking the device disables the screen and thus the PocketTouch controls, the lock timer can be deactivated automatically by PocketTouch (set up in Settings) and instead the screens dims to save battery power. Ok, so far so good. The next thing I did was taking my iPod out for a bike ride to see how PocketTouch practically performes in the field. As it turned out the PocketTouch controls are really sensitive and it happened quite often that simply by putting my hand into my pocket and grabbing the iPod I accidently changed the volume or the song or paused the playback. Since I did not need the ability to change the volume with PocketTouch, I disabled it which made things a bit better. Still, even after some hours of practise, the control are too sentive for me to be operated with ease while riding a bike without accidently doing something unwanted. Nevertheless it beats the alternative of unlocking the iPod just to change a song and thus I really started to like PocketTouch. When I got back home after about three hours I realized that this rather short trip drained the battery more than usual. Since PocketTouch is an additional program which is running all the time while the music is played, it is clear that this inevitably will put an additional strain on the battery. Furthermore, since the screen cannot be deactivated, but only dimmed, this will also drain the battery faster compared to an iPod which is locked during music playback. To get an idea about the additional processor load caused by PocketTouch, I ssh'd into the iPod and both ps and top gave me an average load of about 2% for PocketTouch which is surprisingly high considering that the processor load of the actual music playback performed by MobileMusicPlayer does not even show up (0.0% in both ps and top). Hmm yeah, not so great. To check how this affects the running time of the battery I did two test runs. For the first run, without PocketTouch, I gave the iPod a clean reboot, disabled WiFi and the ssh demon, attached some microphones and set the volume to max-2 ticks (this is how I use my iPod), charged the battery to full and then let the iPod play music for five hours straight while locked. This drained the battery to 89% according to the numeric battery display. The second run was performed under the same conditions, however I used PocketTouch (with the display of the song title disabled to drain as less additional battery power as possible). After the numeric battery jumped from 89% to 88% I noted the total running time which was 127min. This means that the power consumption of the device with PocketTouch running was more than two times higher than playback while the iPod is locked which in my eyes simply is not acceptable. Not only does this mean that the running time of the battery is cut in half, but also that you have to recharge more often and thus on a long term also reduce the lifetime of the battery by the same factor. In my opinion this trade-off is definitely not worth the additional convenience offered by PocketTouch. Well, as it turned out I am still searching for a way to conveniently change songs without having to unlock my iPod. Someone please make an app that changes the function of the Sleep button while the device is locked, so when pressed it changes the volume buttons to previous/next song. Press again and you are back to volume mode. Press Sleep and hold for 1sec and the song pauses, short press again and it continues. No need to keep the screen activated and thus a lot better for the battery.