Police are warning the expected 50,000 or so TT visitors not to fall victim to opportunist thieves.
The Eastern Neighbourhood Policing Team took to Facebook to issue a warning to those camping out over the fortnight.
They say you should never leave valuables in tents and should mark your property with UV pens to make sure you can identify it if it's taken.
Officers say larger items can be kept locked out of sight inside vehicles.
manx.net users targeted in new scam
Deli thanks customers after closure
Festive northern lights tonight?
Flood damage could cost £3.7 billion over next century
Dolly Parton book charity needs your support!
Christmas bin schedules
Number of MiCard users falling
Island businesses targeted in phishing campaign