Are any anti-theft GPS trackers dynamo powered? I am considering an anti-theft GPS tracker for my bicycle, but I am worried about battery life.

Are there any that recharge from a hub dynamo?
I use this product:
http://www.aliexpress.com/item/Spybike-Bike-GPS-Tracker-to-spy-and-pretect-your-bike-with-ease-New-bike-tail-light/32251529357.html
Since this is a tail light, it is less suspicious as a GPS tracker. You can simply charge and remove the USB cable as well.
(One thing to notice since this product is not inexpensive, I epoxied the screw just to be on the safe side :D )

For anyone without a USB 5V DC port from your dynamo hub:

http://www.ebay.co.uk/itm/BICYCLE-DYNAMO-USB-REGULATOR-PDA-PHONE-USB-CHARGER-M172-/370935357198?pt=LH_DefaultDomain_3&amp;hash=item565d785f0e

Tigra Sport Bike Charge Power Conterter


or.. just search google for &quot;Hub dynamo USB&quot; if you are not from the UK :D

and for anyone who loves DIY to make your own AC-DC regulator:
https://parttimetinkerer.wordpress.com/2011/11/12/charging-usb-devices-from-a-hub-dynamo/