Help understanding license enforcing (Ruggedcom, Sierra Wireless, Cradlepoint)

Hi,

I’m doing some research on multiple vendors before recommending a purchase. Does someone know how each of these vendors enforce their licenses for the Hw and sw?

1. Warnings of expiration (syslog, etc)
2. Partial / limited access or limited config
3. Limiting or throttling features in the hw
4. Disable the hw

Thanks for your help...