Gang Activity
As Peter Der Manuelian pointed out in an interview with New Scientist in 2011, the markings could have been normal graffiti at the time. “In and around Giza, red-painted numbers and graffiti are widespread. These are frequently masons’ or work-gangs’ marks, designating numbers, dates, or even the gangs’ names.”
Photographic Evidence
The camera used by the professionals this time was capable of collecting film around sharp corners, which was useful in this case. And, as one of the device’s designers put it, it was critical in dispelling some of the most bizarre myths about the doors’ construction. Shaun Whitehead observed that the pins “end in small, beautifully made loops, indicating that they were more likely ornamental loops than electrical connections.” according to New Scientist. “Our new pictures from behind the pins show that they end in small, beautifully made loops,” Whitehead added.