Final answer:
The maximum period for a temporary license as per the information provided and pertaining to handgun licenses issued by the police is one year. There are also requirements for the firearm to be stored safely, and no additional legal restrictions can be applied beyond what the license permits.
Step-by-step explanation:
The maximum period of time a temporary license can be in force is specifically dependent on the laws and regulations of the jurisdiction in which it is issued. However, if we refer to the information provided, where police could issue one-year licenses for handguns, it can be inferred that the temporary license in this context can be valid for up to one year. It's important to note that firearm regulations can vary widely, and owners must keep their firearms unloaded and disassembled or secured with a trigger lock or similar device, unless in certain situations like being at a place of business or used for legal recreational activities. No additional restrictions should be applied that legally restrict others from doing anything the license permits.