What is the origin of the idiom "soft touch" and when to use it?

The origin of the phrase "soft touch" is not definitively known, but it likely emerged from the imagery of touch as a metaphor for vulnerability or susceptibility. The word "soft" in this context implies a lack of resistance or firmness, suggesting that the person is easily influenced or taken advantage of. The phrase has been in use for many years and has become a common expression in the English language. It effectively captures the idea of someone who is kind-hearted or easily persuaded, often to the point of being easily exploited or manipulated. While the precise origin remains unclear, the phrase has become a widely recognized idiom for describing someone's susceptibility or vulnerability in certain situations.