TomTom now includes speedcamera databases with their models, the first update is free (and comes inclusive with the first map update) thereafter its an annual subscription. Map updates are free for the first year I think. This only applies to TomTom standalone devices - not TT Navigator6 for instance, installed on a PDA. Since it works off the database its only as accurate the day the database was made although you can add or remove locations, and update the same to TomTom. You can get plenty of false alarms, from out-of-service fixed sites and unused mobile sites, and you can obviously miss new sites.