I read it that these Originalitätssicherungen are a mechanism to ensure that the product is original, i.e. that it has not been tampered with. Look at it from a different angle and it becomes 'tamper-proofing' (devices/mechanism/catches/etc).

Can't help really on the second bit! Dosieren is normally measuring in the sense of measuring a certain amount of something to be added to something else.

It's better to post separate terms under separate queries. That way, people can help you with one or other. If you post them as one question, you might not get help from people that can only answer part of it (-:

HTH

Mary