Various implementations described herein are directed to a non-transitory computer readable medium having stored thereon computer-executable instructions which, when executed by a computer, may cause the computer to detect electrical noise corresponding to one or more engines starting or running. The computer may record a first timestamp corresponding to the engines starting or running. The computer may detect that the engines have stopped. The computer may record a second timestamp corresponding to the engines stopping. The computer may also use the first and second timestamps to determine engine runtimes.

A path acquiring unit that tracks a visitor of an amusement facility, and acquires a movement path of the visitor, and a print creating unit that creates a visit record by combining the movement path acquired by the path acquiring unit with a picture acquired at a prescribed place on the acquired movement path are included, and the visit record created by the print creating unit is provided to the visitor.

A path acquiring unit that tracks a visitor of an amusement facility, and acquires a movement path of the visitor, and a print creating unit that creates a visit record by combining the movement path acquired by the path acquiring unit with a picture acquired at a prescribed place on the acquired movement path are included, and the visit record created by the print creating unit is provided to the visitor.

A sun lounger cover has a main body portion configured to in use rest substantially flat against and at least partly cover the upper surface of a sun lounger, and an occupancy status indicator configured to indicate the occupancy status of the lounger.

A sun lounger cover has a main body portion configured to in use rest substantially flat against and at least partly cover the upper surface of a sun lounger, and an occupancy status indicator configured to indicate the occupancy status of the lounger.

A method and system to obscure inappropriate sounds and ensure privacy in conversations through Near Field communication. The method includes applying a passive NFC tag on a first object associated to an individual who advances inside an enclosed area designed for a specific purpose. Further, the method includes activating an NFC reader on a second object when the first object and the second object are within a short range. Furthermore, the method includes sending a signal to a WIFI router wherein the signal speaks to a speaker module inside the enclosed area. Moreover, the method includes automatically streaming sound files, from a storage, thereby making it difficult for the individual inside the enclosed area to hear private conversations between two or more people due to a fogging sound effect produced by the sound files.

A method and system to obscure inappropriate sounds and ensure privacy in conversations through Near Field communication. The method includes applying a passive NFC tag on a first object associated to an individual who advances inside an enclosed area designed for a specific purpose. Further, the method includes activating an NFC reader on a second object when the first object and the second object are within a short range. Furthermore, the method includes sending a signal to a WIFI router wherein the signal speaks to a speaker module inside the enclosed area. Moreover, the method includes automatically streaming sound files, from a storage, thereby making it difficult for the individual inside the enclosed area to hear private conversations between two or more people due to a fogging sound effect produced by the sound files.

A system and method for tracking the duration of patient time in a dentist chair may be provided. The system may include at least one sensor, at least one microcontroller, and at least one remote server. The sensor and microcontroller arrangement may detect the presence of a patient in the chair and may record the duration of the patient's presence and upload the data to the server. The system and method may further account for temporary patient departures from the chair by creating a time threshold, under which a visit duration calculation will not be reset. The system and method may record a total duration of a patient's time in the dentist chair.

A system and method for tracking the duration of patient time in a dentist chair may be provided. The system may include at least one sensor, at least one microcontroller, and at least one remote server. The sensor and microcontroller arrangement may detect the presence of a patient in the chair and may record the duration of the patient's presence and upload the data to the server. The system and method may further account for temporary patient departures from the chair by creating a time threshold, under which a visit duration calculation will not be reset. The system and method may record a total duration of a patient's time in the dentist chair.

An automatic time tracking and validating method of a portable digital device, including: maintaining by the portable digital device a current clock time and current uptime; and recording by the portable digital device a plurality of times a first entry that has: user information; the current clock time; the current uptime. A reference time recording process is performed once or more, including: recording by the portable digital device together with a server, which server has a reference time, a second entry that has: the reference time; the current clock time; and the current uptime. The portable digital device provides the server with the first and second entries.