Use cases

Case 1

Alice
notices that she has been leaving her house without her wallet, causing
a great deal of inconvenience once she gets to work or the grocery
store. Using our product, she places an RFID inside her wallet. As
she's leaving the house, the doorknob vibrates harshly and a "beeping"
sound is played as she does not have her wallet
with her. Alice then looks at the token container and sees that the
wallet token is glowing red. She can then pick up the wallet token and
squeeze it to locate her wallet.

Case 2

On
a particular day, Ken comes home from work carrying his keys and
cellphone, but not his wallet. When he enters his home, a beeping sound
notifies him that one of his critical items is missing. Kent looks at
the token container, sees the wallet token glowing red, and realizes
immediately that his wallet is missing. He decides to go back to work
and look for his wallet. Because of our product, Ken knows right away
that he has not brought his wallet home that day.

Case 3

Jane
lives alone and has no telephone landline in her rental apartment. One
morning, she can't find her cellphone. Instead of searching her whole
apartment, Jane goes to the token container, and squeezes the token
representing her cellphone. Her cellphone begins to ring, and Jane is
able to locate it right away.

Components:

Hand-held Items:

Items keyed to tokens will each have a small gadget attached to them.
This gadget will a have small radio receiver to receive an activation
signal and a piezo-electric speaker so that the gadget can respond to a
signal from the system transmitter.

Tokens:

We have separate tokens for phone, wallet, and keys. Each token will
need to be foam or other soft material so that a force sensor will be
activated when it is squeezed. Each token will need to be translucent
so that it can be lit via an internal LED or other low power light
source. each one will also have a small radio transceiver to send
input and receive output when squeezed. The tokens should be 2.5" to
4" in length and 1.5" to 3" in width so that they can easily fit in
one's hand. Several images or token concepts are below.

Door:

The doorknob will have a small electric motor within it that can be
used to create a vibration. It will have a translucent handle so that a
flashing visual signal can be created by an LED embedded in the handle.
There will be an mid-power RFID reader embedded in the door frame or
the door itself. There will also be a small radio transmitter that can
send activation signals to the hand-held items. All items will be
connected to a small microprocessor embedded in the door or the wall
next to the door. This microprocessor will determine which items are
missing based on input from the RFID, activate the doorknob vibration
and the tokens, and activate the gadget when the associated token is
squeezed.

Sketches