Communication systems and methods

A method comprising:

• establishing a communication session between a first device and a second device, the first device associated with a user and the second device associated with a merchant, the communication session established by a server;
• the server automatically determining that the second device is associated with a merchant;
• and
• the server communicating the merchant association with the second device to the first device, the first device maintaining a contact list of merchants with which the first device has previously established a communication session.

A method comprising:

• communicating an offer to a mobile device for display on the mobile device, the offer including an option to purchase a product;
• receiving a request from a user of the mobile device to purchase the product;
• receiving product purchase information from the user;
• offering an additional service to the user, the additional service associated with the product purchase;
• and
• validating, using one or more processors, a user identity responsive to acceptance of the offer for the additional service by receiving physical input from the user via the mobile device.