Q00P  To start with, buying this software gets you an email stating:

Your software key is XXXX

Please note that this software key will not work if you reinstall your software, you can ask a new software key when needed through our customer service:

- for North America: supportusa@irislink.com

- for other countries: support@irislink.com

Eh? What? We need to ask for a new key on reinstall? Okay, fine!

Stupid, but let's install the software since we paid for it...

I am sorry but, having used this software in a business setting for 7 months, we would like to let you know that this is NOT WORTH PAYING FOR. We have struggled all the time, and finally we saw the light. The computer crashed and we needed to reinstall OS X from scratch, plus all applications. Starting Readiris it asks for the software key. Hm, bugger! Mailing support@irislink.com for a key. 24 hours later, STILL NO KEY!

As a business we are stranded until we get another key. THIS IS NOT ACCEPTABLE!  
(Version 11.6.2)