Breast cancer (BC) poses a serious threat to the health and life of women of all ages all over the globe. The most important task in breast cancer diagnosis is to identify the disease at an early stage. Therefore, there is a need for annual examination, primarily for women with risk factors. So, the current trend requires development and implementation of new approaches to early detection and timely treatment of BC. Among the list of new technologies for early screening is development of a portable in-house "smart" mammograph T-screen. Our clinical studies involved 198 women who used the device and confirmed its high sensitivity and specificity. The proposed method is absolutely harmless, informative, it can be used any number of times, regardless of age and pregnancy. Such data on high safety allow using T-screen widely for preventive purposes, both in early diagnosis and to detect a risk group of breast cancer in women. The methodology for using the device that we propose is simple and accessible to any user.