How can I check if a family member has got checked in there with no phone only internet?

Yup well said agree with Mr Flores it's patients security policy same goes like at an airport its policy protocol must prove you are imidiate family

Go into the hospital and check the front desk

Im not quite sure if you could do that online. Usually you'll have to go to the front desk to check. I would imagine it'd be a huge privacy issue to do it online because they wouldn't be able to confirm a relationship with the patient.