Rebecca Minkoff's RFID trial painted itself into a corner--deliberately

Most retailers experimenting with customer-facing RFID—which has come a long way since it's assembly-line-only days—are trying to expand its use as much as possible, looking for whatever snippets of the business could be enhanced with a touch of wireless tag broadcasting. But apparel-and-accessory chain Rebecca Minkoff is trying to limit RFID's reach, literally painting its broadcasts into a corner. Why? Here's the problem: Rebecca Minkoff's goal is to take RFID-tagged-merchandise and scan it in a tiny dressing room (and, yes, I agree that saying "tiny" and "dressing room" is duplicative. My apologies). But how can the RFID readers be prevented from detecting merchandise in a neighboring dressing room, which would defeat the purpose?