Mount device utilizing patterned features for rack orientation detection

A system comprising:

• a mount device comprising a mount body comprising a plurality of patterned features having the same size and shape and an RFID reader antenna matrix physically coupled to the mount body, the RFID reader antenna matrix comprising a plurality of RFID reader antennas;
• and
• a sample carrier comprising a carrier body comprising at least one recess for holding sample containers or samples, a carrier locating feature associated with the carrier body, a carrier orientation feature associated with the carrier body, and an RFID tag physically coupled to the carrier body, wherein the sample carrier is capable of being positioned on the mount body by interfacing one or more of the patterned features with the carrier locating feature and the carrier orientation feature, wherein the plurality of patterned features comprise a mount orientation feature configured to engage with the carrier orientation feature of the sample carrier to engage distinct carrier orientation features of the sample carriers to fix a rotational orientation of the sample carrier with respect to the mount orientation feature in a distinct desired orientation.