Table 1.
Types of sensing technologies for IoT-CTS.
| Type | Example Devices | P2P | O2P | Automatic | Speed | Precision |
|---|---|---|---|---|---|---|
| Location-based | GPS, Mobile [5,7,11] | ✓ | × | ✓ | Medium, High | Medium, High |
| Distance | Ultrasonic, Magnetometer [4] | ✓ | ✓ | ✓ | High | Medium, High |
| Vision | Camera | ✓ | ✓ | ✓ | High | Medium, High |
| Vision | QR code reader | ✓ | ✓ | × | Low | High |
| Touch | Inductive/capacitive sensors | × | ✓ | ✓ | High | High |
| Proximity | Bluetooth/BLE [5,11,15] | ✓ | ✓ | ✓ | High | High |
| Touch, Proximity | NFC, RFID | ✓ | ✓ | ✓ | High | Low, Medium |
| Environment | Biosensor [16] | × | ✓ | ✓ | Low, Medium | Low, Medium |