It works by pairing a device with your mobile phone (or laptop) via Bluetooth. When your mobile gets out of range of your security device, an alarm goes off. Unless of course, you mislay them both at the same time.
The device is essentially a memory stick as well as an alarm. It has about 8Mb of memory and automatically stores all of your telephone numbers and text messages.
If you lose your phone this means you can recover all your numbers and lost text messages quickly. Which is a god send for me. In fact, that feature alone makes it worth investing in, as it’ll save you a fortune when it come to upgrading.
To makes things even more convenient, it requires no software on the handset itself. The gadget  uses the standard Phone Address Book Profile (PABP) to query the handset and download all the data. Most modern handsets support that profile.
Your dongle can be charged through its microUSB port. If you use a PC to recharge the device, then, at the same time you have the option of downloading all the saved data to your computer. So you can lose both your handset and your dongle and still be safe.  
The I-migo supports the SyncML protocol so it will be able to store your emails, too – especially if you're running SyncML compatible email software like Synchronica's.
Managing director Saban Demirbasa said he's hoping to have the I-migo Bluetooth device in retail stores around June-July 2010. Expect to pay around £19.99 for it.
Expect a full multimedia version of the device available for Xmas 2010, offering 16 GB for around £39. Then you can store all your photos on it, too.