Some of the companies offering this service include Oasys Mobile (formerly Summus), Navio, FusionOne and VeriSign .

FORBES: The Mobile Locker

Oasys Chief Executive Gary Ban believes lockers will take hold because even fickle customers eventually come back to their old favorites.

FORBES: The Mobile Locker

Navio and Oasys offer versions of a locker under their own brand.

FORBES: The Mobile Locker