[TYPO3-mvc] Request hash (HMAC) checking failed. how to disable this check?

[Domi]

Hello,

I need to deactivate the HMAC request hash check. I add fields through 
AjaxUpload and the HMAC check always fails.

I thought:
@dontverifyrequesthash $myObject

is doing this job?

I am using 6.0.5 at the moment, but would like to upgrade it to 6.1 
soon. I've seen that the function checkRequestHash is deprecated in 6.1. 
How can I handle this there?

Thanks for hints,

Dominic