Yes, what is the actual point of that? The squiggle resembles neither your actual signature, nor any other version you might have produced in the past or would in the future.

The whole point of a signature is (an approximation) uniqueness and reproducibility. If it can't fulfil those functions, it may as well be skipped.

Unless that handheld screen is actually capturing DNA information from your finger. Maybe I'll wear jewel thief gloves next time UPS call.