Patent ID: 11900787
Assignee: nan
Field: Telecommunications (Electrical engineering)
Classification: CPC G  B  H | IPC B  G  H

Claim 18:
19. A hygiene monitoring system comprising:
a radio frequency (RF) tag transmitting an RF signal and storing an identifier of a user;
an RF tag reader capable of receiving the transmitted RF signal from the RF tag, retrieving the identifier of the user from the transmitted RF signal, and estimating a distance between the RF tag reader and the RF tag;
a first database for storing a list of users and corresponding identifier of each user of said list of users;
a second database for storing a list of food types and corresponding food-specific safe consumption period of each food type which specify a period of time to be safe to consume a food of such food type if stored in a food container after any person opens said food container;
a processor configured to generate a set of food expiration information for an opened food container, said set of food expiration information comprising information obtained by retrieving the identifier of the user from said first database upon functional detection of said RF tag by said RF tag reader and by calculating an expiration date based on a specified food-specific safe consumption period and a first current date;
wherein said specified food-specific safe consumption period is retrieved from said second database based on a specified food type communicated by the user to said processor; and
wherein the generation of said set of food expiration information is triggered when the distance of the RF tag from the RF tag reader gets closer than a preset value.