Q. I have a medical condition which makes my hands shake, and thus I am very prone to double-keying when typing on a modern keyboard. Is there anything that I can buy, or do, that might help?

A. It is possible to buy keyboards that offer more resistance - like the typewriters of old - but they are expensive. Das Keyboard from kustompcs.co.uk has been very well reviewed, but costs an eye-watering £120. Perhaps try and find a second-hand one on eBay? First though, try adjusting the “repeat delay” on whatever keyboard you are using currently. The setting is located in Keyboard section of the Control Panel on a Windows PC, or within System Preferences, then Keyboard & Mouse, on a Mac. You will find a slider there. Move it to increase the delay between pressing a key twice and it repeating.

Q. I've been told that using a PC can cause RSI. Is this true, and what is RSI?

A. RSI - Repetitive Strain Injury - is used to describe many different types of soft tissue injury including carpel tunnel syndrome and tendinitis. It is usually caused by repetitive motions, poor posture and stress, and has the potential to cause crippling disability and pain. At the level of use that we pensioners make of PCs, RSI is most unlikely. To be exposed to it at all would normally require several hours at the keyboard daily. If you feel that you may be exposed to the risk of RSI, then there are several things that you can do to protect yourself. Make sure to take regular breaks away from your PC if you can; get up and walk around for a few minutes each hour. Also, try and alternate between using your keyboard and mouse rather than relying on the mouse for everything. When you do use your mouse, move with your shoulder rather than putting all the strain on your wrist. You can buy mouse mats that have gel wrist support. You may also want to look into buying one of the special keyboards available which have been designed to be more comfortable to use.