The point of sale in any store is very simply the registers. That is the point at which items are sold. In stores with different departments, there may be registers in specific areas as well as in the main front-end. For example, if a store has a special department with more expensive items such as electronics, the department will be equipped with extra security and it will have its own point of sale.
A pharmacy definitely needs its own point of sale (POS). A POS system is what controls so much of what goes on in any given retail setting. It is no longer just a cash register, free of the whole work grid. Not at all. Now the registers at POS spots are complex and they tie right in to the company computer systems. Pharmacies in particular need to keep accurate records of anything involving prescriptions.
When this is the case, know that only the best systems are going to be used. This is so no mistakes are made. With the best pharmacy pos software, the data regarding each individual patient and their private information is linked directly to the sale. You would be able to scan identification and link it with the records of the patient. The exact list of all prescriptions the patient has gotten over the last year or longer should be available at need.
Basically, since the POS system of a pharmacy is what links all operations and inventory together, it is the center of a pharmacy business. Whether the pharmacy is private or part of a large market, you will still want the best kind of software and hardware in place to prevent any lost information or other mistakes from occurring. Bigger is not necessarily better but the pharmacy POS system should not be an area to skimp on.