Managing clients w/ Dyn IP

Hi, im wondering, how do you manage client behind dynamic IPs. Im aware of dyn dns, but maybe there is another approach im missing

Im also thinking on doing a scipt + php/MySQL to make RB post a daily backup along with its ip

What do you want to manage?

basically i was thinking on a centralized backup storage and a place where i can find the client’s IP

Ok. If you say dyn dns i am guessing modem. Need more inf on network. How does your users connect? Do you use hotspot or mikrotik any where?