Patent ID: 7324347

Claim:
A memory card system, comprising: a memory card having a setting element which moves to expose either of two paths extending from above said memory card to below said memory card; a detector which detects which of said two paths is exposed by and which of said two paths is blocked by a solid interior portion of said setting element, a first of said paths exposed indicating that writing to said memory card is permitted, a second of said paths exposed indicating that writing to said memory card is prohibited; said memory card having a recessed rectangular notch along an edge of said memory card, said setting element sliding in said recessed rectangular notch to expose either of said two paths, said either of said two paths corresponding to either of two unblocked remaining portions of said recessed rectangular notch, said first of said paths corresponding to a first of said unblocked remaining portions, and said second of said paths corresponding to a second of said unblocked remaining portions.