20.33947.69263 NP => 85.33947E, 27.69263N
20 - Is the grid zone number. Each grid of 1 x 1 degree is assigned a number. Nepal has 28 zones
33947 - Is the Longitude decimal degree
69263 - Is the Latitude decimal degree
The coding system is accurate to about 1m. This can be used for house addressing and locating assets such as electric poles and manholes.
This app provides an alternative addressing system to alphanumeric codes. Numeric code is better than alphanumeric and can be shared easily. There are 12 digits which makes it similar to a typical mobile phone number. The code is not to remember but to share it via various medium. The google code for above address is 7MV7M8VQ+3Q7 and what3words is "celebrate.extend.inspects" which is not so easy to communicate for a common Nepalese citizen.
Please provide your suggestions to improve and implement this. Similar implementation can also be done for other countries.