One or more crooks is trying to rip-off customers' financial information at some Canada Line stations.

On April 1, Metro Vancouver Transit Police announced that three debit/credit card skimmers had been discovered in Compass Vending Machines.

"As seen in the photos, an unaltered CVM has a black camera above the PIN pad," Transit Police stated in a news release. "A CVM with a skimmer has the black camera covered and a hole for a pinhole camera instead. The material used to cover the existing camera may also be peeling away from the CVM surface, or have signs of glue or tape."

Anyone who sees an altered CVM is being asked to report it to a station attendant or contact Transit Police by phone at 604-515-8300 or by text at 87.77.77.

Out of an "abundance of caution", Transit Police is encouraging anyone who used a credit or debit card at the following stations and times to check with their financial institutions to ensure that their cards weren't comprised.

• Marine Drive Station on Thursday, March 24, between 6:30 a.m. and 4:00 p.m.
• Vancouver City Centre Station on Thursday, March 31, between 5:00 a.m. and 12:00 p.m.
• YVR Airport Station between 12:00 p.m. on Thursday, March 31 and 08:00 a.m. on Friday, April 1