Filter key for fountain access door

1. A liquid dispenser station comprising:

a liquid dispenser configured to dispense liquid that passes through a filter, the filter disposed within the liquid dispenser station;

an access door to gain access to the filter,

wherein the filter comprises a key to open the access door.

2. The liquid dispenser station of claim 1 , wherein the filter is disposed in an interior volume of the liquid dispenser station, and the access door is configured to gain access to the interior volume.

3. The liquid dispenser station of claim 1 , wherein the access door defines a keyhole configured to receive the key in order to open the access door.

4. The liquid dispenser station of claim 1 , wherein the key is in the form of a protrusion extended from a bottom end of the filter.

5. The liquid dispenser station of claim 4 , wherein the protrusion has a cylindrical configuration.

6. The liquid dispenser station of claim 4 , wherein the protrusion has a through hole therein.

7. The liquid dispenser station of claim 6 , wherein the through hole has a square profile in its cross section.

8. The liquid dispenser station of claim 4 , wherein the key is disposed at a center of the bottom end of the filter.

9. The liquid dispenser station of claim 4 , wherein the key is disposed approximately near a periphery of the bottom end of the filter.

10. The liquid dispenser station of claim 1 , wherein the filter is removable, and

further comprising a non-filtering bypass cap that can replace the filter to allow the liquid to be dispensed to pass therethrough without filtration.

11. The liquid dispenser station of claim 10 , wherein the non-filtering bypass cap has a key to open the access door.

12. The liquid dispenser station of claim 1 , wherein the access door is openable by a separate key located outside of the access door.

13. The liquid dispenser station of claim 12 , wherein the separate key is part of a second filter used to replace the filter disposed within the liquid dispenser station.

14. The liquid dispenser station of claim 12 , wherein the separate key is a standalone key.

15. The liquid dispenser of claim 1 , wherein the filter has a top end configured to secure the filter within the liquid dispenser station.

16. A liquid dispenser station comprising:

a liquid dispenser configured to dispense liquid, the liquid dispenser including a replaceable component; and

an access door to gain access to the replaceable component,

wherein the replaceable component is accessible via the access door, so that the replaceable component upon expiration is replaced with a new component, and

wherein the new component includes a key to open the access door.