PDFs are Outdated
PDFs have basically been around since dinosaurs roamed the Earth. They are a thing of the past. Your advertisers don’t want monthly or weekly PDFs of their out-of-home statistics sent to them. They want, rather expect, real-time statistics. They want to be able to pull up analytics of their campaign at any time. They want proof of play immediately, not 28 days after campaign start. Give them what they want.