Jelly engineers, where are the sensors located on these supermarket robots?

We have one of these ridiculous machines roaming the aisles of my Stop and Shop, and it runs into me. https://newfoodeconomy.org/supermarket-robot-automation-ai-organized-labor-stop-and-shop/ I am used to being invisible to lots of sensors (it is sometimes a challenge getting water from a faucet in a public restroom) but I am hoping that if I find out where the sensors are, I can get up close to deter it. Occasionally I get cornered, otherwise I go around.
And yes, I’ve asked at the store, and yes, I’ve made educated guesses, I’m hoping someone has real knowledge of these things.

It’s really annoying.
Thanks