How do I check my balance on my TAP card Metro?

Related questions

1. Is Metro closed tomorrow?
2. What is difference between Metro and train?
3. How fast do coal trains go?
4. What is the fastest bullet train?
5. How do I get from Terminal 1 to Metro?
6. How much is St Petersburg metro?
7. What time does the St Petersburg metro close?
8. How much is the Metro train?
9. How deep is the St Petersburg metro?
10. Can I get down before destination station in Metro?

Tags

1. #expired
2. #transfer
3. #balance
4. #metro
5. #vending
6. #taptogo
7. #customer
8. #outlets
9. #status
10. #device
11. #sales
12. #machines
13. #calling
14. #vendor
15. #check
16. #centers
17. #their