Autonomous mobile vending, card and ticket issuance system

A mobile vending robot comprising:

• a first plurality of sensors configured for directing the robot to autonomously navigate an environment;
• a chassis including a secure storage compartment for storing items;
• a touchscreen interface for displaying information to a user and receiving user input;
• a payment interface for connecting to a payment system to process point-of-sale transactions;
• and
• at least a second sensor configured for identifying a customer,
• wherein the robot is configured to:
• weigh an energy consumption cost against a sensory input benefit for each sensor in the first plurality of sensors;
• dynamically switch off one or more sensors in the first plurality of sensors when the energy consumption cost of the one or more sensors exceeds the sensory input benefit of the one or more sensors;
• fuse signals from at least a subset of the first plurality of sensors to provide a minimum sensory input to autonomously navigate the environment without colliding with objects;
• receive a signal from a customer device summoning the robot to the customer, the signal including an identifier of the customer and a location;
• navigate to the location;
• identify the customer by the second sensor;
• receive customer input via the touchscreen interface for a point of sale-transaction;
• transmit payment information received via the payment interface to the payment system;
• and
• receive confirmation of payment from the payment system.