I have one of their products.<p>It&#x27;s not a bad product - but the company seems to have gone bust. They&#x27;ve stopped answering any emails, and the last news was that their Seat Post Tracker was meant to launch in 2012&#x2F;2013:<p><a href="http:&#x2F;&#x2F;www.bike-eu.com&#x2F;sales-trends&#x2F;nieuws&#x2F;2012&#x2F;8&#x2F;spybike-seatpost-tracker-10110639" rel="nofollow">http:&#x2F;&#x2F;www.bike-eu.com&#x2F;sales-trends&#x2F;nieuws&#x2F;2012&#x2F;8&#x2F;spybike-se...</a><p>Their current trackers are 3G only - and most countries are shutting down (or have already shut down) their 3G GSM networks.<p>I&#x27;m definitely on the lookout for any replacements.