RFID technology is able to solve almost all the problems facing warehouses of any class.
RFID in logistics
Effective warehouse management requires the following tasks:
automatic collection of real-time information on the receipt and sale of goods;
exclusion of loss of information through the use of a unified system of accounting and control;
the ability to quickly search for goods;
reduction of time for all logistic operations.

A well-known technology in the field of automatic identification is bar coding. RFID compared with barcoding has the following advantages:
contactless reading and writing;
work out of line of sight;
long reading range;
data overwriting;
large amount of data;
simultaneous reading of a large number of tags;
label durability.

The general principle of operation of any RFID system is quite simple. There are always two main components in the system: it is a reader and an identifier (a map, a label, a key fob). The reader emits electromagnetic energy into the surrounding space. The identifier receives the signal from the reader and generates a response signal, which is received by the reader's antenna and processed by its electronic unit.
By the principle of the RFID system can be divided into passive and interactive. In a simpler passive system, the reader's radiation is constant in time (not modulated) and serves only as a power source for the identifier. Having obtained the required energy level, the identifier is turned on and modulates the radiation of the reader with its code, which is received by the reader. By this principle, most access control systems work, where you only need to get the serial number of the identifier. Systems used, for example, in logistics, work online. The reader in such a system emits modulated oscillations, that is, it forms a request. The identifier decrypts the request and, if necessary, generates an appropriate response.