The invention relates to a memory device comprising numerous memory cells, each cell comprising at least one selection transistor and one stacked capacitor and driven via word and bit lines. When a data request is issued from the sink device to the source device, device authentication is made between the source device and the first data processing unit to generate second authentication keys having the same data. Nasal tubes are adapted to be inserted into nostrils of the subject when the adaptor is attached on the face of the subject. The AMM operation proceeds while the barrier operation continues, independent of the processor. Another method and an article are also disclosed.