In Entrapment (1999), Virginia's aim is to steal a Rembrandt portrait in an office. So she planned the stealing at night time and while entering into the building she installs this thing (image below) at four corners of window frame.
After she pressed something, the window slowly slides outside like this:
In most heist movies the thieves use to cut the glass in a circle shape and then enter into it, but this movie showed it differently. What device is Virginia using here?