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IVR or SMS based navigation for smart phone not education equipped people

Problem statement:
   On Thursday morning (16-10-2025) i went for walking near Perungudi in chennai. There, i was saw a truck driver he notes the address and has some navigation landmarks. But, he hesitate to follow the navigation due to every day development of chennai. He asked me if you know this location. I said , i don't know but, you may follow the map. He said I have dial pad phone no map in it. So, I was traveled with the track to reach the place used by google map. Then , I realised many Indian old people causing this problem and some poor internet place also.
Solution:
   If some one know where they are or say some landmark through mobile like 198 (AI). It should say their location on voice call and if they want navigation to some places it should create session with say the navigation tips. It will recall them to ensure they are going correct path.
Predictable problems:
   1. Voice call or sms not encrypted it may tab by middle one to give wrong guide.
   2. Privacy, it knows client location history.
   3. Signal may worse than 2g.
   4. Travellers not have dial pad phone also or not charge(battery power)in the phone.
   5. If they ended the monthly subscription from ISB.
   6. Unknown client introduce threats against local people.
Unsovable problem:
   1. Travellers not have reciver - Battery drained or not have mobile phone.
   2. Signal problem.
Other solutions:
   1. Voice call is not request - response model it is full duplex. (Encryption)
   2. Privacy - client location history - system should erase 6 month before client data on client request for deletion.
   3. If they don't have balance to call we can provide toll free number for calling.
   4. For two way encryption and poor signal problems I am just thinking about LoRa and satellite phone AM radios. But, I couldn't come to solution.


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