My sister and BiL are interested in signing up for SR thanks to all the info I've given them about the surveys.

Here's the situation: They each have their own laptops, but no hard-wired internet service. They have a broadband wi-fi plan with Verizon for their internet access for both home and on the road. My sister is moving out of state for a new job and BiL will be staying behind with their DD while my sister scopes out the new neighborhood for more permanent housing and childcare. My sister will be staying at an Extended Stay America hotel for a month and taking advantage of their wi-fi service. After that, they will again be sharing a residence and possibly a hard-wired internet service.

So, can they BOTH sign up for accounts? Or will that be a violation? I don't know how the whole "ISP address" thing works with a mobile broadband service. My sister would like to sign up and then refer her husband so he can take his own surveys while she is away.

Any ideas? They are both very excited about this!