The method provides buffer status reporting for the transmission of uplink data from a wireless device to a base station. The tracks on at least one data carrier surface are grouped into bands, and the address space of logical block addresses is divided into address subsets. Upon receipt of a particular sensitive data item from a particular merchant, the RTS identifies one or more reference token pools corresponding to the merchant. The folding top frame is movable between a closed position in which the folding top frame is longitudinally extended and a stored position in which the folding top frame is folded.