A feature built by a designer of a program which allows the designer extra privileges normally denied to other users of the program. A back door in a login program could for instance give the designer the ability to login to a system even though he did not have an account on that system.
kipengele kujengwa na designer wa mpango ambayo inaruhusu designer marupurupu ya ziada kawaida alikanusha kwa watumiaji wengine wa mpango. mlango wa nyuma katika mpango login inaweza kwa mfano kutoa designer uwezo wa kuingia kwa mfumo ingawa hakuwa na akaunti kwenye mfumo huo.