Modern smartphones are a high-tech, compact and expensive device that is attractive to criminal elements. To reduce the likelihood of theft, manufacturers of mobile devices use very sophisticated innovative methods: unlocking using biometric data, remotely disconnecting the device and the ability to determine the exact coordinates of the location of the smartphone. Ericsson from Sweden has developed an original solution that will allow the smartphone itself to assess the situation. The developers have patented a smartphone equipped with a sensor system that allows you to determine the nature of the environment of the apparatus. A smartphone can independently \The analysis of the environment is based on data from gyroscopes, a light sensor and a microphone. When you capture the smartphone with your hand, the device attempts to determine whether the hand belongs to the owner or whether it is the hand of an outsider. For this, for example, you can use biometric data and compare the heart rate of the owner with the heart rate of a person taking a smartphone in his hands. When identifying a stranger, the smartphone’s body begins to vibrate at ultrasonic frequencies. It will be difficult to hold the smartphone in such conditions, especially if the thief carefully pulls the gadget out of the owner’s pocket, holding the edge of the case. That is why the patented method of protection is called “adaptive friction”. So far, Ericsson’s technology is not ready for mass deployment to devices. When this happens, and how much it will increase the cost of the final product, is not reported.