Abstract: Systems and methods for an electronic lock which is powered wirelessly from mobile power supplies, including smartphones or other mobile computing devices. A system can include: a processor; a deadbolt or a latch; an electromagnetic device physically connected to the deadbolt or latch, the electromagnetic device electrically connected to the processor; and a power receiving unit, the power receiving unit configured to receive power from a mobile power supply, the power receiving unit electrically connected to the processor, wherein, upon receiving the power at the power receiving unit from the mobile power supply: the power receiving unit converts the power into an electrical current; the electrical current powers the processor; the processor sends instructions to the electromagnetic device to move the deadbolt or latch; and the electromagnetic device in response to the instructions, moves the deadbolt or latch.

Abstract: A Double Opt-in.TM. method and system for generating electronic mail subscription address lists is disclosed. When a subscription request for a particular subscriber address is received, a unique token associated with the address is generated and a verification message containing the token is sent to the designated subscription e-mail address. The subscription is not considered valid until a confirmation message containing the token and associated subscription address is received in reply. When a confirmation message is received, it is processed to extract the received token and subscriber address. If the returned token is valid, the received subscriber address is added to one or more subscription address lists.