ARM TrustZone

TrustZone is a security feature found in some computer processors. It's designed to help keep confidential information secure. When TrustZone is activated, a separate area of the processor is created. This "secure zone" is where sensitive data and personal information can be stored while other applications are being used. TrustZone also helps protect the data by encrypting it, so it can't be accessed without a special key. This means if hackers try to access the data, they won't be able to read it or steal it.