Engineers from New Zealand worked with a door mat. Now he can distinguish people in the tracks, given the shape of their soles and the weight distribution of the owner of the shoes. The device creates a scan of a person’s shoes when he comes to the door. The proposed development may be one of the stages of fast multi-factor authentication of the homeowner in the future, which will exclude the use of additional USB-tokens, putting fingers on the corresponding scanners, etc. Suranga Nanayakkara and his colleagues from the University of Auckland presented a new product at the conference AH2019. Inside the door mat is a 15.3-inch capacitive sensor. He is able to detect an object located above the rug at a height of 4 centimeters. This property allows you to scan the shoes of the person who approached the door. Unfortunately, the technique proposed by the craftsmen is not perfect and not 100% accurate. As it turned out, already on the second day of development testing, recognition accuracy decreased from one hundred to ninety-six percent when analyzing the soles of 15 volunteers. But the engineers do not lose optimism, they are confident that in the future they will be able to bring the work of the smart mat to perfection.