### 💳 The T-money Card (Your Key to the City)

You cannot pay with cash on Seoul buses, and buying single-trip tickets for subways is a hassle.

- **Purchase:** Buy a **T-money Card** at any convenience store (CU, GS25, 7-Eleven) for 4,000 KRW.
- **Reload:** Add at least 20,000 KRW at the store or at subway machines. (Note: Machines only take **cash/KRW**).
- **The Golden Rule:** You **must tap your card** on the sensor when you get ON and before you get OFF (especially on buses) to get free transfer discounts.

### 📱 Must-Have Navigation Apps

Google Maps is not reliable for walking directions in Korea. Please download these:

1. **Naver Map (Supports English):** The most accurate map for Korea.
2. **Kakao T (Supports English):** The "Uber" of Korea. Essential for calling taxis.

### 🏢 Venue Contact Information

- **Building Name:** OSSTEM Implant Magok Headquarters
- **Address:** 3 Magokjungang 12-ro, Gangseo-gu, Seoul
- **Phone:** +82-2-2016-7000

### 📋 Guide Section Addition

💡 Pro-Tip for Your Trip

To navigate Seoul like a pro, we highly recommend downloading these apps before you arrive:

1. **Naver Map:** For accurate walking and transit directions. (Google Maps is limited in Korea).
2. **Kakao T:** For calling taxis easily with English support.
3. **Emergency Contact:** Dial **1330** (Korea Travel Hotline) for 24/7 tourist assistance in English.