Patent ID: 7209730

Claim:
A method of modifying a telephone to enable an operator of said telephone to dial “911” purely by touch, said method comprising: providing a telephone having a key pad comprising at least ten number keys arranged to dial the digits from 0 to 9 inclusive, each of said number keys being marked with a visual indicator denoting the digit which the number key is arranged to dial; providing a first auxiliary member having a first tactile indicator, said first auxiliary member comprising a substantially rectangular transparent thin base having tactile projections on one of its major surfaces to provide said first tactile indicator and an adhesive layer on its other major surface opposing said one major surface; providing a second auxiliary member comprising a second tactile indicator distinguishable by touch from the first tactile indicator, said second auxiliary member comprising a substantially rectangular transparent thin base having tactile projections on one of its major surfaces to provide said second tactile indicator and an adhesive layer on its other major surface opposing said one major surface; adhering the first auxiliary member to the number key arranged to dial the digit 1 such that the first tactile indicator does not substantially obscure the visual indicator on said number key; and adhering the second auxiliary member to the number key arranged to dial the digit 9 such that the second tactile indicator does not substantially obscure the visual indicator on said number key.