Deepak, Thank you for sharing email with us.
But can you share the details of the system you are proposing? Please share the white paper, code, license under which it is shared. It makes sense only if its open standard and open source. Otherwise this email is of no use to this group. -- Thejesh GN ⏚ ತೇಜೇಶ್ ಜಿ.ಎನ್ http://thejeshgn.com GPG ID : 0xBFFC8DD3C06DD6B0 On Tue, 1 Jul 2025, 21:35 Deepak Sharda, <deepsha...@gmail.com> wrote: > Thanks Thegesh for writing about this. Here is the mail we wrote and > spoke with the department of postal. > > Congratulations for launching DIGIPIN Srikant ji a noble gentleman has > shared your email with us. Finally the government realised that incorrect > addresses are causing .7% of our GDP and we need to fix this. > > Huge respect to you sir but there are major flaws in the system > 1. This system is not human communicable as it is 10 digit with multiple > alphabets, plus code similar didn't work. How can a rural woman call an > ambulance and tell a 10 digits code with alphanumeric combination, phonic > sounds 'B' 'P' > 2. This system is not precise as it is covering a 4X4 mtr grid which is > not precise then the user sharing its current location. The grid is not > always aligned to our houses front gates so will make a super mess for > delivery people > 3. you can't remember multiple Digi pins, we should remember at least > office ,home ,paternal addresses. so <http://addresses.so/> can't replace > the traditional addressing system. People should club there addresses and > create their own short code > 4. Grid based navigation will make a huge mess as actual roads( in the > navigation app ) can be on another grid and can lead to far away or back > home with this digipin > 5. it doesn't solve the 1 mtr precise accuracy. so we need a solution > which can solve multi floor navigation. > 6. it doesn't work without a solid mapping infrastructure. Only digipin > without the residential , service , footways will solve the purpose > 7. They don't have an app you go to on the browser which gives you noisy > location data ( lat long ) and based on that you get your digi pin > 8. It doesn't help in emergency service when somebody tries to help or > call an ambulance , fire brigade > 9. collecting data and data analysis is like impossible as if you ask a > person at hospital to tell digipin and enter in system to map real time > effected area or dengue , COVID or any other communicable disease > > Anyways what we can bring to the table is building a solution for precise > 1mtr delivery all across india without - > > phone number > driving instructions > name > phone location > > If you ask me the benefits we all have, what you have already mentioned in > the department website in the FAQ section. This solution is better than > Pluscode , Zippr , What3words, EloC. > We would like to present this idea to the department and if they like us > we are ready to do a strategic partnership with the department. We don't > want anything in return from the department no obligation , no financial > support or infrastructure or IT. > > The system will always be free , lifetime for every Indian person , > government , commercial entity and unlimited use . So we are not building > this for money we want to do nation service as this is our by product we > are building the mapping infrastructure. > > > We have successfully tested the mtr precise delivery across India. > > > On Thu, Jun 19, 2025 at 2:31 PM Thejesh GN <i...@thejeshgn.com> wrote: > >> Looks very similar to openlocatiocode but it is not >> >> https://dac.indiapost.gov.in/mydigipin/home >> >> Here is my DIGIPIN: 4P3-J39-PP84 >> >> https://dac.indiapost.gov.in/mydigipin/home/4P3-J39-PP84 >> >> What I found out about >> >> https://www.indiapost.gov.in/VAS/Pages/digipin.aspx >> https://github.com/CEPT-VZG/digipin >> https://www.mydigipin.com/p/digipin.html#fourth >> >> >> Not sure why we couldnt use Open Location Code which is already supported >> in many apps. But at least the logic is open/. >> >> ~~~~ >> >> The India Post is spearheading an initiative to implement a standardized, >> geo-coded addressing system across India. This effort aims to simplify >> address solutions for efficient delivery of public and private services. In >> collaboration with IIT Hyderabad, NRSC (National Remote Sensing Center) and >> ISRO (Indian Space Research Oragnisation), the India Post has developed the >> Digital Postal Index Number (*DIGIPIN*), a national-level addressing >> grid-based system. DIGIPIN is poised to serve as a robust foundation for >> Geospatial Governance, promising improvements in public service delivery, >> quicker emergency responses, and enhanced logistics efficiency. >> >> The introduction of DIGIPIN marks a transformative leap in India's >> digital journey, bridging the gap between physical locations and their >> digital counterparts. >> >> PINCODE was introduced in India on 15th August, 1972 to identify the >> loction by codifying the location in 6 digit PINCODE. As it is well known >> that the same PINCODE is used for main Post Office and Branch Post Offices >> linked to it, resultantly the PINCODE serves for larger geographical area. >> >> In modern world where geolocation is specific because of advanced GPS >> devices, India Post in collaboration with IIT Hyderabad has come up with an >> idea to integrate th GPS location of a service user by codifying the geo- >> cordinates known as latitute and longitute to serve the customer in a >> better way. The beta version of DIGIPIN has been released by INDIAPOST for >> comments, suggestions etc to refine the concept and build final version of >> it. >> What is DIGIPIN? >> >> The Department of Posts also know as India Post is undertaking a project >> to establish a standardized, nationwide geo-coded addressing system by >> developing a National level Grid known as DIGIPIN. >> The implementation of this Digital Addressing system would ensure >> simplified addressing solutions for citizen centric delivery of public and >> private services. A standardized geo-coded addressing system would enhance >> India’s geo-spatial structure. It would add to the geospatial knowledge >> stack of the country in line with the National Geospatial Policy 2022, >> which seeks to strengthen the geospatial sector to support national >> development, economic prosperity and a thriving information economy. >> This document contains the technical details of the DIGIPIN, the National >> Level Addressing Grid >> Design Approach What is the Core Concept behind DIGIPIN? >> >> Department of Posts have collaborated with IIT Hyderabad for developing a >> grid based addressing system which has been designated DIGIPIN. DIGIPIN is >> visualised as an alpha numeric offline grid system that divides the >> geographical territory of India into uniform 4- meter by 4-meter(approx.) >> units. Each of these 4m X 4m units (approx.) is assigned a unique 10-digit >> alphanumeric code, derived from the latitude and longitude coordinates of >> the unit. >> >> This alphanumeric code serves as the offline addressing reference for any >> specific location within the DIGIPIN system. DIGIPIN is thus strictly a >> function of the latitude and longitude of the location represented as a >> grid value. The system is designed to be scalable, adaptable, and >> integrated with existing GIS applications. >> DIGIPIN layer >> >> DIGIPIN layer will act as the addressing reference system which will be >> available offline and can be used for locating addresses in a logical >> manner with directional properties built into it due to the logical naming >> pattern followed in its construction. DIGIPIN can be also used for >> emergency rescue operations, national disasters like flood. DIGIPIN is >> proposed to be fully available in public domain and can be easily accessed >> by everyone. Since no private address data is stored against DIGIPIN grid >> value, there is no privacy concern associated with DIGIPIN being in public >> domain. DIGIPIN Grid system being an addressing referencing system, can be >> used as the base stack for development of other ecosystems where addressing >> is one of the processes in the workflow. >> How will DIGIPIN work? DIGIPIN : Code Architecture >> >> The Detailed structure is such that the DIGIPIN is essentially an >> encoding of the latitude and longitude of the address into a sequence of >> alphanumeric symbols using the following 16 symbols: 2, 3, 4, 5, 6, 7, 8, >> 9, C, J, K, L, M, P, F, T. >> >> The process of identifying the cells is done in a hierarchical fashion. >> The encoding is performed at various levels, and the basic idea is the >> following: >> >> - A bounding box is used that covers the entire country. >> - The bounding box is split into 16 (i.e., 4x4) regions. Each region >> is labeled by one of symbols 2, 3, 4, 5, 6, 7, 8, 9, C, J, K, L, M, P, F, >> T. The first character in the code would identify one of these regions. >> This is called the level-1 partition. >> - Each region is then subdivided into 16 subregions in a similar >> fashion. Each of the 16 subregions are labeled by the 16 characters. For a >> given region, the subregion is identified by the second character of the >> code. Therefore, the first two characters of the code uniquely identify >> one >> of the 16^2=256 subregions. This is called the level-2 partition. >> - The encoding of successive characters, and therefore the next 8 >> levels is done in an identical fashion. The 10-symbol code therefore >> uniquely identifies one of the 16x10 cells within the bounding box. >> >> Bounding box: >> Following are the details of the bounding box used: >> >> - Longitude 63.5 – 99.5 degrees eas >> - Latitude 2.5 – 38.5 degrees north >> - The Coordinate Reference System (CRS) used in the proposed code >> design is EPSG:4326. Using EPSG:4326 (also known as WGS84) has several >> advantages like wide recognition and adoption, simplicity and global >> coverage >> >> [image: DIGIPIN - Digital Address of your location] >> >> The choice of the corner points of the bounding box are based on the >> following considerations: >> >> - This includes the entire territory of India. >> - Includes the maritime Exclusive Economic Zone (EEZ), and therefore >> DIGIPIN allows to provide addresses to Indian assets in the sea (oil rigs, >> future man-made islands, etc.), or even potentially be used to locate >> regions in the sea by the maritime sector. The maritime EEZ is computed >> assuming 200 nautical miles extent from the coastline. >> - The Indian mainland is covered by only 8 regions, and therefore can >> be labeled with the digits 2-9 at level-1. >> - Level-1 grid lines do not cut through cities with very large >> population >> - The level-10 cells would be almost rectangular, but the dimensions >> would vary based on the latitude. This would translate to a cell of size >> smaller than 3.8m x 4m if measured at the equator, and this is reasonable >> given the accuracy of most current commercially available Global >> Navigation >> Satellite System (GNSS) >> >> Properties of DIGIPIN >> >> - DIGIPIN contains the geographic location of the area. It is >> possible to extract the latitude and longitude of the address from the >> DIGIPIN with low complexity. >> - DIGIPIN has been designed for the Indian context. All points of >> interest to India (including maritime regions) can be assigned codes, and >> it is possible to assign unique digital addresses even in areas that are >> very densely populated. >> - The format of the DIGIPIN is intuitive and human-readable. Effort >> was made to infuse a sense of directionality within the format of DIGIPIN. >> - DIGIPIN is independent of the land use pattern and the structure >> built. Note that DIGIPIN is designed as a permanent digital >> infrastructure, >> that does not change with changes in the names of state, city or locality, >> or with changes in the road network in an area. The DIGIPIN is designed to >> be robust to accommodate future developments and changes. The arrival of a >> new building in a community, or even a new village or city in a district, >> or changes in the name of a road or locality will not affect the >> underlying >> DIGIPIN. >> - The length of the DIGIPIN is designed to be as small as possible in >> order to provide an efficient digital representation of addresses. >> >> Labelling of regions at various levels Level 1: >> >> - Level-1 labelling ensures that the mainlandis labelled using only >> the digits 2-9. >> - Codewords starting with P, W and X are reserved for future or >> special uses >> >> [image: DIGIPIN - Digital Address of your location] >> [image: DIGIPIN - Digital Address of your location] >> Level 2: >> >> - Each Level-1 region is further split into 16 sub-regions called >> Level-2 regions as illustrated in the figure below. The regions are >> hierarchically partitioned into sub- regions in an identical fashion. >> - For Levels 2 to 10 the same labeled grid is used, with the labeling >> performed in a hierarchical fashion. >> - Symbols are assigned in anticlockwise fashion, spiraling outwards. >> Note that this labeling grid is different from the grid used for level-1. >> The grid used for levels 2-10 provide some sense of directionality and >> adjacency: cells labeled by consecutive symbols (such as 6 and 7) are >> geographical neighbors. >> >> [image: DIGIPIN - Digital Address of your location] >> The level-1 grid, on the other hand, is designed to use numerals 2-9 for >> mainland India. Further, using two different grids at level-1 and levels >> 2-9 avoids inadvertent labelling of locations outside India using the >> symbols P, F and T at level-1. >> Code Architecture explanation through illustration: >> the geographical coordinates of Dak Bhawan (28.622788°N, 77.213033°E) are >> marked with a red star on the India base map. The figure demonstrates the >> selection of DIGIPIN symbols at each level, based on the grid encompassing >> Dak Bhawan. The DIGIPIN of Dak Bhawan is 39J-49L-L8T4 : >> Level - 1 >> Level - 2 >> >> <https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgVmbY5T_VPo0d_nybmPyWwtnOXftPXr2IeJtDAqrpf2MNy89yks7yaZCxOd12BFkn6m9K1TupzoQmJ4sW4G70IsZHtK140l1ZDQRVh7g3AVtD2KPYxVCqUg0Gf5h-vcgi1lWhZUA1yVaKrn6b5zRf9dfNbcqN0wVlJUOdCLqEErsh3yq0uR2A-R6hfqa3/s893/img104.jpg> >> Level - 3 >> Level - 4 >> Level - 5 >> Level - 6 >> Level - 7 >> Level - 8 >> Level - 9 >> Level - 10 >> >> -- >> Thejesh GN ⏚ ತೇಜೇಶ್ ಜಿ.ಎನ್ >> http://thejeshgn.com >> GPG ID : 0xBFFC8DD3C06DD6B0 >> >> -- >> Datameet is a community of Data Science enthusiasts in India. 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