![](https://habrastorage.org/r/w1560/webt/ep/px/q4/eppxq4_b9pnlyftw7orbmnqhn0k.png)
There are many situations when you need to protect your data, and different tools can be used to do that. For example, a safe. We develop a passcode data protection mechanism by using an FPGA board and Quartus Prime software. It allows demonstrating the basic concepts of a combination lock such as entering data, setting and checking a passcode, and displaying data.