Swansea Police said 25-year-old Daniel Boyce has been charged with stealing money from the Regal Cinemas at the Swansea Mall.
The surveillance camera caught the youth stealing money from the register when it was left unattended.
The theatre clerk, however, helped police find the suspect. He was able to match the surveillance photos with the alleged ones he found on Facebook account of the thief.
Police were then able to find Boyce and arrest him.
He was accused on Friday morning and held on USD 1,000 cash bail. If convicted he could face up to two-and-a-half years in prison.