Most slot machines in land-based casinos still use a sensor to determine how many coins or bills are being inserted. By interrupting these sensors with a pocket laser light you can make the machine think you're inserting coins or bills while you aren't.

What is the trick to winning online slots? You just have to play the right games that provide a high RTP and the volatility that fits your style. Moreover, you can implement a betting strategy and increase the size of the bet after one or several losses in a row so that when you win, you receive a higher payout.