More than 2,500 bicycles have been put on the national database so far.
Jersey Police are continuing to offer the free security marking, with officers at West Park between 7-9am on Friday morning.
The unique code helps identify the owner if a bike is stolen.
The free Co-op sponsored events continue tomorrow between 10am-12pm at Les Quennevais Sports Centre.
They will be back at West Park between 7-9am on:
Friday 24th May
Monday 3rd June
Wednesday 12th June
Friday 21st June
Wednesday 24th July
Thursday 1st August
and at Les Quennevais Sports Centre 10am-12pm on Saturday 6th July.
The force is also recommending bike owners:
- Fit a good bike lock and attach your bike to something secure
- Always lock your bike, even if you are only leaving it for a couple of minutes
- Keep your bike in a secure garage/shed
- If you have quick-release wheels, lock them or take them with you
- Remove lights and take them with you.

Haut Du Mont Trial: 'It could explode', jury hears 999 calls
Haut Du Mont Trial: Worker checking gas valves spent almost 'entire' time on his phone
Red Arrows still expected for Jersey Air Show
Haut Du Mont Trial: Gas works were 'sloppy, unsafe, and cut corners', allege prosecutors
26 Victoria Village homes get planning permission
Haut du Mont trial: Explosion 'an incident waiting to happen'
Jersey flights impacted by UK air traffic control issue
Engine fault sees private jet diverted to Guernsey Airport