[victorhooi]

I use a Spybike (http://www.spybike.com/)

Unfortunately, the company seems to have gone bust.

They have stopped responding to emails - and their tracker is 3G only - many countries have started to shut down their 3G GSM trackers.

There was one on Kickstarter before called the "Bike Spike" - however, it turned out to be a fraud, and the creators ran away with backer's money (I didn't back them).

The Spybike isn't bad - the big issue is getting a GPS lock in urban areas, long GPS lock times from a cold-start, and battery life.

Definitely keen to see what else people are suggesting these days.

[victorhooi]

Correction - I meant to say 2G only (as in, their trackers only work on the 2G GSM network, which is being shutdown in many/most places).