How can I use nfc to make a pass to the room?

Question

Physical access control

Hello! Please tell me how can I implement such actions using nfc tags? A group of people comes, each has an nfc tag, information about this person is written on it. When they all gathered, a person with a phone comes up to them and, using the nfc module on the phone, reads information about each person. The information goes to the server that the whole group has gathered at a certain time. Then, when they were about to leave, he counted them again and the information is sent to the server that these people left the premises.

Answer 1

Well, do it as described. Record info on tags, distribute to people. We put NFC Tools on the smartphone, read it, somehow and send it somewhere (at least copy-paste in telegrams).