Officers security marked 42 bikes at an event at a Fenland police station on Saturday.
The event, held at Whittlesey Police Station, gave residents the chance to make their bikes more secure from theft.
Cycle coding involves stamping into the metal of the bike, near the bottom bracket, your postcode and possibly your street number, making it close to unique as a cycle ID.
Marking and labelling a bike in this way acts as a deterrent to criminals and may help the police track it down if it’s stolen.
Unless a bike is well-identified, a thief may escape prosecution because there is no proof of theft.
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