We should start paying attention to the Walmart intercom for our safety. Here’s what you should know. Do you pay attention to the intercom system at large stores like Walmart while shopping or do you tune them out? It’s very common for people to tune it out as if it’s white noise. 9 times out of 10 it has nothing to do with us, the shoppers. For example, if you hear “code spark” at Walmart, they need help at the registers because the lines are getting too long. It’s an “all hands on deck” call. Believe it or not, there are special Walmart codes that we need to know as customers.