There are several approaches to automatic label printing at pickup points. Here we explain how they work and what risks they carry.
The program takes a screenshot and runs neural network character recognition (OCR) to find the required number on screen. The result is sent to the printer.
Delay of 1–3 seconds: screenshot → neural network → number search on image
Neural network requires CPU/GPU resources, slows down other programs
Errors when screen is overexposed, interface changes, or app updates
The program installs a fake root SSL certificate into the operating system and sets up a local proxy. All encrypted traffic from the computer — browser, apps, messengers — is decrypted and passes through this proxy. The program searches the data stream for the cell number and sends it to the printer.
Through a fake certificate, all data transmitted by the computer becomes visible: passwords, banking details, personal messages. This applies not only to the marketplace app, but to any other traffic on the same device.
Installing a root certificate requires admin rights and modifies system-wide settings
Many antivirus programs detect root certificate substitution as a threat and block the program
When the marketplace app updates, the data structure changes — the program stops working
TagPrint analyzes the sound files used by the marketplace app. Each cell number corresponds to a specific sound file — the program identifies it and instantly sends the correct number to the printer. The network, traffic and personal data are not involved.
Response under 100 ms — faster than any alternative method
Does not touch the network stack, installs no certificates, does not affect other programs
Does not depend on the marketplace API structure — works regardless of app updates
Minimal CPU usage — the program runs invisibly in the background
| Criterion | OCR | Traffic interception | TagPrint |
|---|---|---|---|
| Response speed | 1–3 seconds | ~300 ms | under 100 ms |
| CPU load | High | Low | Minimal |
| Data security | Normal | High risk | High |
| Admin rights required | No | Yes | No |
| Affects other traffic | No | Yes — all HTTPS | No |
| Depends on app updates | Partially | Yes | No |
| Antivirus compatibility | No issues | May be blocked | No issues |