Patent ID: 7135968

Claim:
A new system and a new method for giving alerting facility as a reminder to a person that he/she has forgotten some object/item/luggage/animal behind anywhere or to secure that traveler is accompanying his/her checked luggage/objects and to quickly identify luggage that does not belong to traveler on board, comprising a transmitting means, which is attached or clipped to the object/item/luggage/animal and a portable receiving/alerting means, which is held or clipped to the clothes of the person, Said transmitting means including: Power supply and on/off power switching means; line driver means to generate an n-bit unique encoded digital signal; frequency shift keying means which modulates the encoded signal such that a logic one in the said signal is represented by an audio signal at a specified frequency and a logic zero is represented by an audio signal at a different frequency; frequency modulation means where a carrier signal frequency is modulated by the frequency shift keying modulated digital signal; amplifying means to amplify the said signal prior to feeding it to the said frequency modulation means; signal transmission means for the transmission of the amplified modulated signal from the said frequency modulation means in the form of radio or pressure sound waves; Said receiving/alerting means including: Power supply on/off power switching means; signal receiving means for receiving the transmitted signal from said transmitting means; frequency demodulation means to demodulate the said transmitted signal; amplifying means which amplifies the demodulated signal outputted from the said frequency demodulation means; frequency shift keying demodulation means to demodulate the output signal from the said amplifying means; decoder means to decode the output signal from the said frequency shift keying demodulation means; alerting means which is enabled from the Said decoder means in order to generate an alert when the object/item/luggage/animal to which the said transmitting means is attached, is away from the said receiving/alerting means within a predetermined range.