Someone did this recently to me i.e. showed me something I'd signed which I didn't. Fortunately this lead to their demise as I am friends with their manager which was unknown by the party in question. Historically I tend to try something on with employment contracts too - I return an unsigned copy to the company. Only 1 out of 6 companies I worked for didn't just stick it in a filing cabinet and forget about it. Ulti…
I lived in a country like this and all my electronic signatures were linked to my natural person. Most documents were signed this way - from rental agreements to tax returns. It was very uncanny to start using things like Adobe Sign or DocuSign afterwards which is very popular in the UK and US.
For the curious - look up m-signature and e-signature in Lithuania.