[Joeaksa]

Not happy with doing WiFi without encription anywhere, so you might want to re-think this.

Once you encript it then the patient you had last week who is now mad at you can sit outside and use the old code (unless you are going to change them on a regular basis and thats more work) then the network would not be secure.

One option would be to take your main internet output and split it. One side goes to your office router and the other to the WiFi. Teach the sect how to generate a new code every morning and give it out to the patients. This would keep your office (and business data) separate from the patient access and give them internet connectivity while keeping the two systems separate.