Trackable security systems for bikes

[jellywrestler]

What experience have people had with trackable security for bikes.
Ie a hidden thingamy on the bike that you can locate remotely?

[DrunkenMistake]

I have one here, that takes a vodaphone sim card, you can set up yourself and hardwire it in your bike, and you can txt it and it will reply back with its current location, PM me if your interested, im not using it, its unused just opened to show someone who was interested.

[Mad-V2]

What brand, how big, how much and where did ya get it?
This is something I've wanted for a while now......

[bogan]

here's a write up I did a few years ago http://www.kiwibiker.co.nz/forums/showthread.php/101268-Cheap-GPS-GSM-tracker-160?highlight=gps+gsm