 STM32 UnicaID. This is the first security resource we see together. In fact, it's a unique device identifier installed at the ST factory. It provides a reference number unique for any STM32 in one family. It's suitable to generate a serial number via an algorithm or also to use some derivation of cryptographic keys. It was 96 bit lengths and in general it's composed of a load number, some wafer ID, coordinate x and y of the die. The first tips. When you want to have the unity across all STM32 device family, you need to use the device unique ID and combine it with the MCU device ID. In this way, you are sure you've got have a unique ID across all our family. Second tips is based on our experience at support level. We receive many requests. I would like to shrink this unique ID and ensure it's still unique. In fact, there is some bits that are always at zero for a given product. X and Y data has a limited range and lot ID and SCOD are coded in ASCII. So, number and capital letter. That means we can decrease, I will say, the size of this unique ID. Or I think it's possible. We will thin the answer on how we can proceed. Details could be different from one product to another. So, it's really important to check in the reference manual or to request details at support level. This result is available across all our STM32 family. I propose we switch to the hands-on now.