What is the different between compilers and interpreters?​

Compiler transforms code written in a high-level programming language into the machine code, at once, before program runs, whereas an Interpreter coverts each high-level program statement, one by one, into the machine code, during program run. Compiled code runs faster while interpreted code runs slower.

Its all  useless we should stop doing everything digitally

First he should verify if he knows the prep person or people to make it is safe, because people can track your information about who and where you are. good luck.