How to check the authenticity of hotel cards?

Many people choose to stay in hotels when they go out to play and travel, but when people stay in hotels, they can often find a small card inserted in the door of their rooms. There is a beautiful woman on every small card, but there are many secrets hidden behind it. On this small card, there are basically some information about soliciting prostitutes, so it is very attractive to most men. Although whoring is illegal, many people still can't help but contact, but the contact information on some small cards is not prostitutes, and some are fraud gangs. ? He came to a small hotel. Shortly after entering the room, he found a lot of small pieces of paper on the ground with many photos of beautiful women, which said that he could provide massage and other special services. One card has a WeChat QR code and the other card has a phone number, so he intends to start the investigation from the person who left the phone number. ? Shortly after the phone call, a girl knocked at the door. After entering the room, the two began to chat. She said she worked in a KTV. Only occasionally, she works part-time in a hotel at night. But he also found that this card was a propaganda tool of their gang, and said that the massage was fake, and then made an excuse to let her leave. ? So he began to study the small card of micro-signal. After sending the added information, the other party immediately passed the certification, and I chatted with the other party. The other party is very active, and there are many beautiful photos in the circle of friends. After the two discussed the price, she said that she would come to him immediately, but before long, she said that she had arrived at the hotel downstairs and asked him to pay the deposit of 200 yuan first, saying that the police had been in strict control recently, but he thought it was a scam and ignored her. ? Soon after, he received a strange phone call from a man who threatened him that he already knew his details and had a chat record. If he doesn't give 500 yuan, he will give it to the reporter leader and his wife. Journalists are not fooled by these threats, so the mobile phones and WeChat on these cards are not only some bad information, but also some for extortion. I would like to remind the masses not to call the above number, because it is illegal and easier to be blackmailed.