There's plenty of jurisdictions where "pasting a scanned signature into a pdf" doesn't produce a legally valid signature.
Germany requires some signing software for pdfs - though printed-signed-scanned documents are also legally valid signatures
Germany requires some signing software for pdfs - though printed-signed-scanned documents are also legally valid signatures
There was a legislature in America that tried to define pi as 3 so irrational laws are not surprising.
By the way, in Spain printed-signed-scanned wouldn't be legally valid either, unless a notary has seen the original and can certify that it coincides with their own handwritten signature. Otherwise it's either original handwritten signature, or digital signature in a digital PDF file, or printed digital signature with a secure validation code that you can verify in some URL.
One challenge with potentially invalid documents - when agreements go south and disgruntled employees get a free wrench to toss into the works.
Another motivator is not wanting to risk cheesing off judges.
source: Once prepped federal cases
The point is that most of these "need a real signature" requirements are arbitrary and inhouse. Not really legal requirements. So the processes could easily be done without.
Is there any place where it does? It seems ridiculous to me to treat copy-pasted bitmap same as real signature.