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The tags also assist the hotel to manage their linen stock. Hotels would know when linens are running low and a new order is needed. With the rising cost of cotton, hotels are ordering linens less frequently.
I kind of picture that hotel guests will be subject to airport type of security when LEAVING the hotel. Imagine guests lining up to see if any hotel goods with a computer ship shows up through a scanner. As long as there's an amnesty bin.