Abstract: A case for an electronic device is provided. The case includes a battery, an interface to receive electrical power from an external power source, a payment device reader, a product information input device, and a computer processor configured to execute computer-readable instructions. The computer processor executes the instructions to conduct communications with the electronic device, limit an amount of current of the received electrical power consumed by the case, allocate the amount of current among the battery and the electronic device based on the communications, read product information from a product using the product information input device, and read a payment device using the payment device reader, where the payment device is used to pay for the product.

Abstract: A case for an electronic device is provided. The case can include a front shell attachable to a back shell, a flexible insert disposed between the front shell and the back shell and configured to at least partially surround an electronic device when installed in the case, a payment device reader attached to the case and configured to be electrically connected to the electronic device, a product information input device attached to the case and configured to be electrically connected to the electronic device, and a battery configured to be electrically connected to the electronic device. The case can also include a rotatable mount that is removably attachable to an outer surface of the case and a hand strap attached to the rotatable mount.

Abstract: A case for an electronic device is provided. The case can include a front shell attachable to a back shell, a flexible insert disposed between the front shell and the back shell and configured to at least partially surround an electronic device when installed in the case, a payment device reader attached to the case and configured to be electrically connected to the electronic device, a product information input device attached to the case and configured to be electrically connected to the electronic device, and a battery configured to be electrically connected to the electronic device. The case can also include a rotatable mount that is removably attachable to an outer surface of the case and a hand strap attached to the rotatable mount.

Abstract: A case for an electronic device is provided. The case includes a battery, an interface to receive electrical power from an external power source, a payment device reader, a product information input device, and a computer processor configured to execute computer-readable instructions. The computer processor executes the instructions to conduct communications with the electronic device, limit an amount of current of the received electrical power consumed by the case, allocate the amount of current among the battery and the electronic device based on the communications, read product information from a product using the product information input device, and read a payment device using the payment device reader, where the payment device is used to pay for the product.