We get asked this when someone finds a bit of miniature electronics embedded in the sheets or other linens.
If you are seeing one of these buried in the hem of your linens the answer is no. You can relax.
These are RFID tags. Commercial laundries attach them to linens to keep track of who belongs to what.
As one supplier explains... "UHF RFID textile laundry tags are designed to optimize industries laundry processes, providing durability and suitability for washing, drying, dry cleaning and ironing. They can be used for many different applications such as laundry application, logistics, anti-counterfeiting, supply chain management control, inventory control, asset tracking, process control..."
If you are concerned about privacy in your rented bedroom learn how to find hidden spy cameras.