There's customer service and then there's customer empathy.
This door opener is great, simple Pow! from a New Mexico indie copy and parcel-sending shop, a la FedEx Office but with a way more personal feel. I was only holding a bag, but picture me with armfuls or a handtrck worth of envelopes and parcels. The button is a standard, but the sign, which couldn't have cost more than ten bucks, makes it a standout.
The picture speaks 1,000 words, and saves hundreds more curse ones.