Wireless PC Lock
Protect personal details and programs automatically when you are more than 2m from your computer
Receiver connects to the USB port and transmitter attaches to a keying or sits in your pocket
Automatically unlocks once you are within 2m - no need to remember to minimise programs!
Perfect for offices, schools, colleges, libraries an other public places
Back-up password protection if the battery runs out
One unique security code in the transmitter
Up to 5 sets of passwords each allowing a maximum of 125 numbers or letters (case sensitive)
Operates wirelessly over radio frequencies
Hassle-free peace of mind
Sounds like a good deal.
Seems to be available instore also so would only be £4.99.
Sorry cannot get it to link to the item so you will need to search on the Maplin website.