Abstract: A vehicle control system includes: an entry/exit management device including a first processor including hardware, the first processor being configured to detect that a user of a vehicle enters or leaves a facility, and output a first signal indicating user's entering the facility and a second signal indicating user's leaving the facility, to a server; and the server comprising a second processor comprising hardware, the second processor being configured to output to the vehicle a third signal for deactivating a smart key function of the vehicle when acquiring the first signal and prohibit unlocking of a door of the vehicle performed by wireless communication, and output to the vehicle a fourth signal for setting the smart key function of the vehicle when acquiring the second signal and permit unlocking of the door of the vehicle performed by wireless communication.

Abstract: A printer having a printer communicator for receiving commands; a thermal line head that prints in line units on thermal roll paper; a multiple line buffer; and a printer controller that controls the thermal line head to print. When the printer communicator receives an image printing command instructing image printing, the printer controller stores the image data specified by the image printing command in the multiple line buffer. When the printer communicator receives a non-image data definition command, the printer controller prints an image on the thermal roll paper by the thermal line head based on the image data stored in the multiple line buffer.

Abstract: A printer including: a printhead; and a processor that controls the printhead. The processor, when data including print data of one transaction is received from an external device, acquires from the received data the print data and a first error detection code the external device calculated from the print data, calculates a second error detection code from the acquired printer, determines whether or not the first error detection code and the second error detection code match, and sends to the external device evaluation result data indicating the evaluation result. When the first error detection code and second error detection code match, the processor prints by the printhead based on the acquired print data; and when first error detection code and second error detection code do not match, discards the received data.

Abstract: A printer including: a printhead; and a processor that controls the printhead. The processor, when data including print data of one transaction is received from an external device, acquires from the received data the print data and a first error detection code the external device calculated from the print data, calculates a second error detection code from the acquired printer, determines whether or not the first error detection code and the second error detection code match, and sends to the external device evaluation result data indicating the evaluation result. When the first error detection code and second error detection code match, the processor prints by the printhead based on the acquired print data; and when first error detection code and second error detection code do not match, discards the received data.

Abstract: A printer having a printer communicator for receiving commands; a thermal line head that prints in line units on thermal roll paper; a multiple line buffer; and a printer controller that controls the thermal line head to print. When the printer communicator receives an image printing command instructing image printing, the printer controller stores the image data specified by the image printing command in the multiple line buffer. When the printer communicator receives a non-image data definition command, the printer controller prints an image on the thermal roll paper by the thermal line head based on the image data stored in the multiple line buffer.