I am asking this rather open ended question. I am starting to explore IoT and its power to transform retail industry. Though I have heavy background in engineering, I am fairly new to IoT.
What I am looking for is an accurate indoor positioning system which I can organically develop - I do not want to use third party systems like Estimote or indoo.rs
I have two options at my disposal.
Use Inertial Navigation System with a skeletal beacon based frames of reference (For sanity check and accurate positioning.)
Use exclusively UWB Beacons for positioning.
I know most companies are going for option #2. Where I have problem with that is how inherently unreliable the Electromagnetic propagation is. I am not sold on the idea of measuring signal strength to determine distance. (A low battery power and a weak signal can show 10x greater distance). Plus maintainability of becaons is another issue.
With Option #1 there is always the issue of cost for INS and some say there is noise issues (especially with cheap INS systems).
So how does #1 compare with #2 for indoor positioning?