Where can I find the PIN number? The PIN number is on a black business card in the box with the crank. If you cannot find it, write an e-mail to firstname.lastname@example.org or use a contact form, giving the SN number of your meter. Tagged: lost my pin numbermobile appmobile applicationpin number Related Articles How to install the app? What allowes the app? How to update firmware in my device? What is ZWIFT compatibility? I cannot add my device to the app. HOW TO CORRECT LEG DISBALANCE?