With the other person's ID number, can you find out where you checked in?

You can't directly find out where the other party has a room.

I. Use and restriction of ID number

As an important information of personal identification, ID number is widely used in various social activities, such as handling banking business and buying tickets. However, the use of ID number is strictly restricted, and it is mainly used to confirm personal identity, not to track personal behavior or activities.

Second, the privacy protection of accommodation records.

Accommodation records belong to the category of personal privacy and are protected by law. Hotels, guesthouses and other accommodation places usually strictly abide by relevant laws and regulations, and keep customers' accommodation information confidential. Unless authorized by law or under special circumstances, such as criminal investigation, it is generally impossible to directly inquire about other people's accommodation records.

Thirdly, it is difficult to query the accommodation records through the ID number.

Even if you have the other person's ID number, it is not easy to find their accommodation records. First of all, accommodation records are usually kept in the database of accommodation places, which are usually not open to the public. Secondly, even if you have access to these databases, you need to have the corresponding access and technical means to query. Finally, even if the accommodation records can be found, it is necessary to ensure the legality and compliance of the inquiry behavior and avoid infringing on the privacy rights of others.

To sum up:

With the other party's ID number, you can't directly find out where the other party opened the room. Accommodation records belong to the category of personal privacy and are protected by law. In normal social activities, it is impossible to directly query other people's accommodation records through their ID numbers. If you need to obtain relevant information, you should abide by relevant laws and regulations and apply and inquire through legal channels.

Legal basis:

People's Republic of China (PRC) Civil Code

Article 1033 stipulates:

Unless otherwise provided by law or expressly agreed by the obligee, no organization or individual may commit the following acts:

(a) by telephone, SMS, instant messaging tools, e-mail, leaflets, etc. Disturb the private life of others;

(2) Entering, taking photos or peeping into other people's private spaces such as houses and hotel rooms;

(3) Shooting, peeping, eavesdropping or revealing other people's private activities;

(4) Shooting or peeping at the private parts of others' bodies;

(5) handling other people's private information;

(6) Infringe upon the privacy of others in other ways.

People's Republic of China (PRC) personal information protection law

Article 4 provides that:

Personal information is all kinds of information related to identified or identifiable natural persons recorded electronically or by other means, excluding anonymous information.

The processing of personal information includes the collection, storage, use, processing, transmission, provision, disclosure and deletion of personal information.