The Israeli Air Force issued an unusual directive this month to soldiers serving at the Kiryah military complex in central Tel Aviv, instructing them to stop ordering food directly into the base through the “Wolt” delivery app and instead arrange with the delivery person to hand over orders at a drop-off point outside the base.

According to the website of the newspaper Yedioth Ahronoth, the directive was prompted by security concerns that a sharp increase in delivery orders during a specific night could reveal a high concentration of soldiers inside the base, which might be interpreted as an indicator of operational readiness, such as the possibility of carrying out a strike against Iran, similar to what is known in the United States as the “pizza index” at the Pentagon.

The newspaper obtained a page of instructions distributed to soldiers outlining how to receive food in a way that reduces risks associated with tracking unusual activity patterns.

The report also stated that online groups believed last June that they detected early signals of an Israeli attack on Iran days before it occurred by monitoring pizza sales data at restaurants near the U.S. Department of Defense.