Communicating with arrays of module units

1. A method comprising:

moving a mobile communication unit along a plurality of module units, wherein the module units are configured to receive light energy and to convert the light energy to electrical energy;

exchanging data with one of the plurality of module units based at least upon the mobile communication unit being in proximity to the one of the plurality of module units; and

the mobile communication unit cleaning a light-receiving surface of the one of the plurality of module units substantially concurrently to exchanging data with the one of the plurality of module units.

2. The method of claim 1 , further comprising the mobile communication unit emitting light, wherein the one of the plurality of module units is configured to power on based at least on receiving the light from the mobile communication unit.

3. The method of claim 2 , wherein the mobile communication device being in proximity comprises the one of the plurality of module units receiving the light from the mobile communication device.

4. The method of claim 1 , wherein the mobile communication device being in proximity comprises the mobile communication device triggering a switch coupled to the one of the plurality of module units.

5. The method of claim 1 , further comprising the mobile communication unit identifying an identity of the one of the plurality of units with which the mobile communication unit is exchanging data.

6. A system comprising a mobile communication unit configured to:

move along a plurality of module units wherein the module units are configured to receive light energy and to convert the light energy to electrical energy,

exchange data with one of the plurality of modules based at least upon the mobile communication device being in proximity to the one of the plurality of module units, and

clean a light-receiving surface of the one of the plurality of module units substantially concurrently to exchanging data with the one of the plurality of module units.

7. The system of claim 6 :

wherein the mobile communication unit is configured to emit light, and

wherein the one of the plurality of module units is configured to power on based at least upon receiving the light from the mobile communication unit.

8. The system of claim 7 , wherein the mobile communication device being in proximity comprises the one of the plurality of module units receiving the light from the mobile communication device.

9. The system of claim 6 , wherein the mobile communication device being in proximity comprises the mobile communication device triggering a switch coupled to the one of the plurality of module units.

10. The system of claim 6 , wherein the mobile communication unit is configured to identify an identity of the one of the plurality of module units with which the mobile communication unit is exchanging data.

11. A system comprising a module unit, wherein the module unit is configured to receive light energy and to convert the light energy to electrical energy, wherein the module unit is configured to:

exchange data with a mobile communication device based at least upon the mobile communication device being in proximity to the module unit,

wherein the mobile communication unit is configured to clean a light-receiving surface of the module unit substantially concurrently to exchanging data with the module unit,

wherein the module unit is one of a plurality of module units, and

wherein the mobile communication device is configured to move along the plurality of module units.

12. The system of claim 11 :

wherein the mobile communication unit is configured to emit light, and

wherein the one of the plurality of module units is configured to power on based at least upon receiving the light from the mobile communication unit.

13. The system of claim 12 , wherein the mobile communication device being in proximity comprises the one of the plurality of module units receiving the light from the mobile communication device.

14. The system of claim 11 , wherein the mobile communication device being in proximity comprises the mobile communication device triggering a switch coupled to the one of the plurality of module units.

15. The system of claim 11 , wherein the mobile communication unit is configured to identify an identity of the one of the plurality of module units with which the mobile communication unit is exchanging data.