This icon is a part of a collection of Skanowanie linii papilarnych flat icons produced by Icons8. Icons follow the guidelines of iOS, Windows, and Android and are designed by a single designer, guaranteeing the consistent quality. Both PNG and vector are available.
There are is a right angles at four corners, basically making a box but without any lines connecting the right angles. Inside the space made by the four corners is a fingerprint with a horizontal line through it. The line is slightly below the middle of the finger print