Common proximity cards (including IC cards, ID cards, and IC/ID keychain cards) are widely used in scenarios requiring contactless identification, access control, or data storage due to their convenience, stability, and security. Below are typical application examples categorized by usage scenarios:

### 1. Residential & Property Management

- **Access Control Cards**: Used for entry to high-end residential communities (gate access, unit building doors), ensuring only residents or authorized personnel can enter.

- **Underground Parking Lot Cards**: For vehicle entry/exit management and parking space identification, preventing unauthorized vehicles from occupying parking spots.

- **Property Service Cards**: Served as "property management cards" (IC authorization cards), used by property staff for patrols, equipment maintenance, or accessing restricted areas like utility rooms.

### 2. Commercial & Retail

- **Membership Cards**: Issued by malls, supermarkets, beauty salons, gyms, etc. to record member information, accumulate points, or provide exclusive discounts (often using IC cards for storing consumption data).

- **Store Access Cards**: Used by employees to enter back offices, warehouses, or cash register areas, controlling internal access rights.

### 3. Campus & Education

- **Campus Pick-Up/Drop-Off Cards**: For kindergartens or primary schools, linking parents’ and children’s information to ensure safe handover—only authorized guardians with valid cards can pick up children.

- **Student ID Cards (Integrated Proximity Function)**: Used for campus access (gate, dormitories), library book borrowing, cafeteria payments, or attendance checks (IC cards are preferred for storing academic and consumption data).

- **Faculty Access Cards**: Granting teachers access to classrooms, laboratories, or administrative offices.

### 4. Transportation & Parking

- **Elevator Cards**: Common in commercial buildings or residential high-rises, restricting access to specific floors (e.g., residents’ floors or office levels) to enhance security—CUID or FUID cards are often recommended for their firewall-bypassing capabilities.

- **Public Parking Cards**: Used in municipal parking lots, shopping mall parking garages, or airport parking areas for automated entry/exit and fee calculation.

### 5. Office & Enterprise

- **Employee Access Cards**: For office building entry, departmental access, or attendance tracking, integrating with company management systems to monitor staff arrival/departure.

- **Conference Room Reservation Cards**: Allowing employees to reserve and access conference rooms via card swiping, managing room usage efficiently.

### 6. Specialized Classification & Management

- **Classification Cards**: Used in logistics warehouses (to categorize goods), medical facilities (to identify patient types or staff roles), or industrial workshops (to control access to production areas).

- **Hotel Key Cards**: A typical application of IC proximity cards, enabling guests to access their rooms, and allowing hotels to reset access rights after check-out.

These applications leverage the proximity cards’ strengths—such as fast reading speed, sensitive sensing, and waterproof/durable design—while adapting to different security needs (e.g., using non-replicable authorization cards for strict access control, or replicable cards for flexible replacement).