ST25DV password protection

[SimoE]

I activated the area1 password protection with password 1. I saw that the default password is "0". Is there a way to change the password 1 over the I2C or is it only possible to change it from NFC side?

I saw that all RF_PWD witch can be configurated to the areas can be change over RF in secure session. But also the secure password is default "0". So I have to configurate the chip with NFC to work in the mass? Or how can I deal with it over I2C to be configurated default for our use?

[JL. Lebon · Accepted solution]

Hello, 

In the ST25DV dynamic tag, RF passwords can only be changed from NFC interface, not from I2C interface.
In the same way, the I2C password can only be changed from the I2C interface.
There is no possibility to modify an RF password other than using the RF commands Present Password followed by Write password.

Best regards.