Before I reply, I want to recognize that as the actual licensed engineer, you have more of a say in this than I do, a non licensed software developer, regardless I would like to continue the conversation to better understand why I am wrong.

Your core argument seems to ride on the idea that public trust is paramount. I can definitely see this on projects such as bridges, buildings, wells etc. I struggle to see it on a private consumer good such as an airbag vest. If I want to cross a river I'm forced to drive across a bridge, and the bridge doesn't come with an instruction manual. It makes sense to engineer for the lowest common denominator here so that the functionality is predictable.

But I'm not forced to use the airbag vest. Every issue you listed is a problem with almost all motor vehicles. On my car dashboard the LED that pops up to indicate low tire pressure is tiny and the label so abstract I had to look in up in the drivers manual to figure out what it meant. In many situations low tire pressure means you could be seconds away from losing control of the vehicle, yet the engineers trusted that dashboard LED would be safe enough for consumers to understand. This is also true for ABS, traction control, stability assist, brake failure, and whatever else gets its own LED.

Even disregarding the subscription service, it still makes sense to have a device that shows a status LED to confirm the system works. What if the battery died? What if some wire internally disconnected? What if some hardware component failed a startup check? An electronic system can alert you to failure conditions far better than a mechanical one.

> 4.) Hardware failures of a huge variety, which can exist in a system which has an inbuilt mechanism to DISABLE airbag.

On any modern passenger car the passenger airbag is disabled if a weight sensor in the seat isn't tripped. These systems already exist and are deployed en masse.

> 1.) Human error to notice, identify, and correctly interpret an LED indicator light.

> 2.) Human error to properly correct an LED warning light indicator for a variety of reasons. ("I called them and gave them my new credit card so I should be ok, even though the light is on.")

> 3.) Inability to correct the situation without first continuing travel to an area with cell or internet service. (Date changed, subscription expired, have been traveling and haven't had reliable cell, internet, or mail for 2 months.)

> 5.) Programming errors and/or network errors.

From the site: https://www.klim.com/Ai-1-Airbag-Vest-3046-000

4. If I’m subscribed monthly and miss a payment or my credit card expires, will the airbag suddenly stop working?

Answer: No. In&motion will reach out with a 30-day warning prior to your payment method expiration. After expiration or missed/forgotten payment, In&motion gives you a 30-day grace period during which the airbag functions completely the same. You will receive notifications about the missed payment. After the 30-day grace period, the airbag will stop detecting crashes until payment is resumed. You will not be able to turn on your airbag vest into ride-ready status after the 30-day grace period, so you won’t unknowingly ride with a non-functioning vest, unless you choose to ignore the LED indicators warning that it isn’t active.

5. Would In&motion turn off my vest mid-ride if I pass the 30-day grace period?

Answer: No. In&motion will not turn off your vest mid-ride for any reason, even if you’re at the end of the 30-day grace period and it elapses during your ride. The only way for it to turn off during a ride is if you didn’t charge the In&box and the battery dies (LEDs indicate battery level, which you see when you turn it on) or if you manually turn it off during your ride.

> Would you feel ok entering a building where the fire exit required the building owner pay a subscription service to unlock?

This is a false premise because fire exists are required by law and factored into the cost of the building. There is no legal situation where you can skimp out on fire exit costs. Also, a motorcycle isn't a shared space. Whether another rider chooses to wear protection or not has no impact on me as a car driver.