What device is a touch panel?

A touch panel, also known as a touchscreen or touch display, is an input device that allows users to interact directly with a visual interface by touching the screen surface. Touch panels are commonly found in various electronic devices, including:
1. Smartphones
2. Tablets
3. Laptops with touchscreens
4. Desktop monitors with touch capability
5. ATMs (Automated Teller Machines)
6. Point-of-sale (POS) systems
7. Kiosks and information displays
8. Smart home devices (e.g., smart thermostats)
9. In-vehicle infotainment systems
10. Industrial control panels

Touch panels use different technologies to detect touch input, such as:
1. Resistive touch
2. Capacitive touch (most common in modern devices)
3. Infrared touch

4. Surface acoustic wave (SAW) touch

These devices allow users to interact with digital content by tapping, swiping, pinching, or using other gestures directly on the screen, providing an intuitive and user-friendly interface for many applications.