Ever wonder what kind of information gets stored on your cell phone’s SIM card? Find out with the SIM Card Reader / Writer Kit from the Maker Shed! Build the kit, then use the accompanying software to read and write from the card, to back up stored SIM card data, recover deleted SMS text messages and phone contacts, examine the last 10 phone numbers dialed, and more. Also works on some smart cards. (Hint: Today might be a good day to subscribe to the Deal of the Day RSS or to start following us on Twitter!)