KenBuster
Every weekday nearly 5000 drivers enter London’s Congestion Charge zone but don’t pay the fee, and TfL’s accounts show it took £65m in fines in 2005/06 as a result. This nifty device will make sure you’re not one of those being stung for forgetting. Using GPS technology it recognises when you enter the zone and notifies KenBuster HQ, who automatically arrange the payment from you to TfL. Price: £199.99 one-off, or £49.99 plus £8 a month www.kenbuster.co.uk