A cash register's drawer can only be opened by an instruction from the cash register except when using special keys, generally held by the owner and some employees (e.g. manager). This reduces the amount of contact most employees have with cash and other valuables.
Internal medicine or general medicine (in Commonwealth nations) is the medical specialty dealing with the prevention, diagnosis, and treatment of adult diseases. Physicians specializing in internal medicine are called internists, or physicians (without a modifier) in Commonwealth nations. Internists are skilled in the management of patients who have undifferentiated or multi-system disease processes.
Affinity doctors who specialize in internal medicine treat the whole body, not just internal organs, and often help other doctors with difficult diagnoses. Affinity doctors of internal medicine are experts at listening to your description of symptoms, even if vague, and spotting subtle physical signs of disease. They may also order diagnostic tests including blood tests, medical imaging, X-ray and other screening tests.