Special hygiene and safety requirements prevail in cleanrooms. Even the smallest amount of particles in the air can cause contamination or impair the quality of the work results. In addition, people, machines and data must be protected in these sensitive areas. Therefore, cleanrooms may only be entered by authorized and trained persons. To control access and entry, contactless authentication solutions with RFID (Radio-Frequency Identification) or mobile technologies such as Near Field Communication (NFC) or Bluetooth® Low Energy (BLE) are the right choice. Selecting the right reader is especially important for cleanrooms. Find out which four criteria need to be considered.