CCTV footage of thieves caught stealing has been posted on the internet site YouTube.
They were caught on camera stealing from Mobilapz in Lord Street, Wrexham and the owners chose to post the images online to warn others.
It is the second time the shop has been the victim of theft this year.
In the first incident, which happened on January 2, an ultra slim Packard Bell laptop worth £400 was taken. The thief put the computer into his jacket pocket while no-one was looking and shortly afterwards calmly left the shop.
In the second theft on January 24 a charity box raising money for the mosque in Wrexham was taken. It was believed to contain £10. The theft was carried out by a woman who came in trying to sell items. She took the box while the shop staff were busy.
The crimes were caught on CCTV and co-owner of Mobilapz Mohammad Baidya, 21, said they have decided to place the footage on YouTube to raise awareness among the public.
“We told the police about the theft of the laptop, but because there wasn’t much cash in the charity box we didn’t bother to report that incident.
“We have invested more money in security, which is, of course, expensive, and changed the layout of the shop in a bid to deter any more of these sorts of crimes
“The way that these people operate shows they are totally unscrupulous.”
In October last year the Leader reported on how Mobilapz was the target of burglars who stole thousands of pounds worth of stock from the shop.
Almost everything was taken in the break-in. To make matters worse there was no insurance in place to cover the loss.
“It has been difficult to recover from that. The burglary meant a considerable reinvestment was needed in the business,” said Mr Baidya.
A spokesman for North Wales Police said: “We are aware of the theft of the laptop and inquiries are on going.”
The videos of the thefts can be viewed by logging on to YouTube and typing in Mobilapz.