Digitizer

A system for receiving, storing, and displaying biometric input comprising:

• a. a touchpad having a touchscreen adapted for receiving input by contact with the touchscreen, detecting the input, storing the input as touchpad data in memory, and visually displaying the input on the touchscreen;
• and
• b. a digitizer comprising:
• i. a substantially transparent touch activatable overlay placed over the touchscreen;
• ii. a plurality of sensors supported by the overlay to detect input to the overlay;
• iii. at least one detectable element supported by the overlay for detection by the touchscreen so the touchscreen can determine the presence and position of the digitizer;
• and
• iv. a data outlet for transferring the detected input as overlay data so the touchpad can visually display the detected input on its touchscreen,
• wherein there are sufficient sensors that the overlay data contains more information than the touchpad data would if the touchscreen were contacted directly without the digitizer present.

A system for receiving, storing, and displaying biometric input comprising:

• a. a touchpad having a capacitive touchscreen adapted for receiving input by contact with the touchscreen, detecting the input, storing the input as touchpad data in memory, and visually displaying the input on the touchscreen;
• and
• b. a digitizer comprising:
• i. a substantially transparent touch activatable overlay for placement over the capacitive touchscreen;
• ii. a plurality of sensors supported by the overlay to detect the input to the overlay;
• and
• iii. a plurality of communicative elements supported by the overlay for transferring the detected input as overlay data directly to the capacitive touchscreen so the touchpad can visually display the detected input on its touchscreen,
• wherein there are sufficient sensors that the overlay data contains more information than the touchpad data would if the touchscreen were contacted directly without the digitizer present.

A device for use with a touchpad having a touchscreen adapted for receiving input by contact with the touchscreen, detecting the input, storing the input as touchpad data in memory, and visually displaying the input, the device comprising:

• a. a substantially transparent touch activatable overlay for placement over the touchscreen;
• b. a plurality of sensors supported by the overlay to detect input to the overlay;
• c. at least one detectable element supported by the overlay for detection by the touchscreen so the touchscreen can determine the presence and position of the device;
• and
• d. a data outlet for transferring the detected input as overlay data so the touchpad can visually display the detected input on its touchscreen,
• wherein the digitizer is incapable of visually displaying the input.

A device for use with a touchpad having a capacitive touchscreen adapted for receiving input by contact with the capacitive touchscreen, detecting the input, storing the input as touchpad data in touchpad memory, and visually displaying the input, the device comprising:

• a. a substantially transparent touch activatable overlay for placement over the capacitive touchscreen;
• b. a plurality of sensors supported by the overlay to detect the input to the overlay;
• and
• c. a plurality of communicative elements supported by the overlay for transferring the detected input as overlay data directly to the capacitive touchscreen so the touchpad can visually display the detected input on its touchscreen,
• wherein the digitizer is incapable of visually displaying the input.

A method for receiving, storing, and displaying biometric input comprising the steps of:

• a. placing over a touchscreen of a touchpad, a device for use with the touchpad having the touchscreen adapted for receiving input by contact with the touchscreen, detecting the input, storing the input as touchpad data in memory, and visually displaying the input, the device comprising:
• i. a substantially transparent touch activatable overlay for placement over the touchscreen;
• ii. a plurality of sensors supported by the overlay to detect input to the overlay;
• iii. at least one detectable element supported by the overlay for detection by the touchscreen so the touchscreen can determine the presence and position of the device;
• and
• iv. a data outlet for transferring the detected input as overlay data so the touchpad can visually display the detected input on its touchscreen;
• and
• b. receiving biometric input to the device, wherein the device converts the biometric input to overlay data, transfers the overlay data from the overlay to the touchpad for display on the touchscreen, and displays the biometric input on the touchscreen.

A method for receiving, storing, and displaying biometric input comprising the steps of:

• a. placing over a capacitive touchscreen of a touchpad, a device for use with the touchpad having the capacitive touchscreen adapted for receiving input by contact with the capacitive touchscreen, detecting the input, storing the input as touchpad data in touchpad memory, and visually displaying the input, the device comprising:
• i. a substantially transparent touch activatable overlay for placement over the capacitive touchscreen;
• ii. a plurality of sensors supported by the overlay to detect the input to the overlay;
• and
• iii. a plurality of communicative elements supported by the overlay for transferring the detected input as overlay data directly to the capacitive touchscreen so the touchpad can visually display the detected input on its touchscreen;
• and
• b. receiving biometric input to the device, wherein the device converts the biometric input to overlay data, transfers the overlay data from the overlay to the touchpad for display on the touchscreen, and displays the biometric input on the touchscreen.