Well, if you read some more in TGL 36 you wil find out that under these conditions a class one EFB can't be used during critical phases of flight. Use during critical phase of flight is a require if you want to have a paperless solution. If you want to use it under critical phases of flight you need EMI, rapid decompression and battery testing done.
For use of type B software (charts) you need to have a fixed mount (either class 2 mount or kneeboard). I heard of some authorities that say you don't need to have a mount as long as you store the EFB before reaching critical phase of flight. Since we have to use kneeboards, I would like to find out who doesn't so we can use them as an example to our authorities that maybe we don't have to do so either.