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Triger-based Dynamic Expiration Time to Products using Passive RFID Tags Disclosure Number: IPCOM000192834D
Original Publication Date: 2010-Feb-04
Included in the Prior Art Database: 2010-Feb-04
Document File: 3 page(s) / 33K

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Triger-based Dynamic Expiration Time to Products using Passive RFID Tags

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Various products,

            from food to drugs, bear an expiration time.That time is set at the production line and is fixed.

Products that contain an RFID tag, might encode on the tag, the expiration time.

    Many of the products do have a dynamic expiration date which is [implicitly in the product description text]

written when the product is being produced and does

not take into account the interaction with the human after being purchased. It does not get updated along the product supply chain.

    The fact that users do not know the right expiration date of the product, after being opened, might cause them to throw away products that are still fresh and usable. Suppose the user has a bottle of pills which is approaching its expiration (at least he feel/fear/believe so ...). If he knows for sure that it has another two weeks before it expires, he would safely keep on using those pills. In case he is not sure, he would probably discard the "old" pills and open a new bottle. In doing so. users

waste valuable medication and add to the garbage too.

Same goes for a bottle of

juice etc.

Overtime, money and other scarce resources are wasted.

An example would be a bottle with fluid usually have a certain expiration date

until the bottle is opened, and a different expiration date after the bottle is opened. The same holds true for medications like pills or syrups that are delivered in bottles and are being consumed over a period of time. The users might forget when they actually started using the medication and risk using it after their dynamic expiration time is reached.

Another use for our new gadget could be in the life saving Tourniquets

business. It is imperative to write down on the Tourniquet when it was applied for the medical crew to prioritize their attention. Having an automatic clock triggered will eliminate the need to write a legible message with a marker in combat scene or traffic accident with many injuries.

    There is prior art which describes the use of Passive RFID tags for tamper detection. However, it is not clear whether it covers the use of a trigger to detect

when a package


which could be a box,

                         a can, a bottle, etc) has been opened and as such when it is expired. The existing methods do either affect the way the RFID value is returned to a reader, or prevent the RFID tag from being read at all.


opposed to our solution, attributes on the RFID tags are not changed due to events (such as the change of expiration date in our case). Therefore, this solution can not be used to solve our requirement, and therefore does not violate our invention.

    One example is http://






    Looking at the existing solutions regarding the monitoring of products expiration date reveals many hits like:


                                    - This article talks about tracking of produc...