Certificates are typically checked by the relevant authorities or organizations that issued them. For example, a university may verify the authenticity of a degree certificate, while a government agency may verify the validity of a professional certification. In some cases, employers or other institutions may also verify certificates to ensure that the individual has the qualifications they claim to have.

Police checks are background checks conducted by law enforcement agencies to verify an individual's criminal history or lack thereof. These checks are often requested by employers or organizations to ensure the safety and security of their workplace or community. The information obtained in a police check can include details of any criminal convictions, charges, or pending cases against the individual.

Room checks are routine inspections conducted by staff in hotels, dormitories, or other accommodations to ensure that guests are following the rules and regulations of the establishment. During a room check, staff may look for any damages, cleanliness issues, or unauthorized items in the room. Room checks are typically done to maintain the safety, security, and cleanliness of the property, as well as to ensure that guests are adhering to the policies set by the establishment.

The packages are typically checked by postal workers or employees of the shipping company before they are sent out for delivery.

In most cases, it is the responsible person or the leader of a group who always checks in. This person ensures that everyone is accounted for and that all necessary tasks or activities are completed. Checking in is an important part of maintaining organization and ensuring the well-being of the group.

Yes, police checks are being pursued as a standard procedure in many situations such as employment background checks, security clearances, and criminal investigations. Police checks are important to verify an individual's criminal record and ensure the safety and security of the community. They are conducted by law enforcement agencies to provide accurate information about an individual's past interactions with the police.

Despite everything, he still makes an effort to stay in touch or keep updated. He may not be fully engaged, but he still shows some level of interest or concern. This could indicate that he still values the relationship or wants to maintain some level of connection.

The math problem is typically checked by the person who originally solved it, as well as by a teacher or tutor if it was part of a school assignment. In some cases, automated tools or software may also be used to check the math problem for accuracy. It's important to verify the solution to ensure that the problem has been correctly solved and that the answer is accurate.