Abstract: Systems and methods for cleaning and monitoring a portable toilet are provided. The system's components include a chemical detector, a concentration sensor, a cleaning device, a container, a rotatable spray nozzle, a locator, an automated door locking device, a processor, and memory. The memory causes the processor to execute a method which involves detecting and sensing urine and feces concentration levels, and cleaning the areas of highest concentration with chemical neutralizers dispersed by the spray nozzle. Data regarding the sanitary condition and GPS location of the toilet may be sent to servers for remote human monitoring. The door locking device may be triggered if the toilet is found to have harmful levels of chemicals associated with urine and fecal matter.

Abstract: Methods and systems for handling fax reception with a high degree of security are provided. The system's components include a fax machine, an optical character recognition (“OCR”) component, a database, a radio-frequency (“RF”) reader configured to detect associated RF transmitters, a processor, and memory. The OCR component, database, RF reader, processor and memory are all in or around the fax machine. The RF transmitters are each associated with a fax recipient. The database stores information regarding fax recipients. The memory comprises instructions that cause the processor to execute a method. The method involves selectively printing incoming faxes based on one or more of a number of factors. The factors include the recipient of the fax, the location of the recipient with respect to the fax machine, and the degree of confidentiality of the fax. Recipients may also be notified of incoming faxes as well.