Disclosed are various embodiments for automated tracking of inventory levels in storage bins. In one embodiment, among others, an adjustable bin divider may comprise a supporting base that has a receiving slot at an end, the receiving slot comprising a slide channel that extends along a top portion of the supporting base; a radio frequency identification (RFID) tag that is attached to the supporting base; and a radio frequency (RF)-blocking slide divider that comprises a first panel with an RF shield and a second panel that has a narrowed end, the first panel being connected to the second panel at the narrowed end, the first panel being inserted in the receiving slot, the narrowed end fitting within the slide channel of the receiving slot, wherein the RF-blocking slide divider conceals the RFID tag from detection from an RFID reader at a position along the slide channel.