Can I use this sign for 'saving a life'?
No, 'saving a life' or 'rescuing' uses a completely different sign where both hands form 'S' handshapes crossed at the wrists and pull apart, as if breaking invisible chains. The sign shown here is strictly for preserving, keeping, or saving money and items.
Does it matter how many times I tap my wrist?
Typically, tapping twice is standard for the general verb form of 'save' or when referring to savings. A single, firm tap can sometimes be used to emphasize the immediate action of saving something right now.
Is this the right sign for saving a file on a computer?
Yes! This sign is very versatile and is commonly used for saving documents, files, or data on a computer, just as it is used for saving money or keeping a physical object safe.