Yes user of qwerty keyboard are at risk because it strains your muscles.
No.
itunes is perfectly legal and there aren't any "risk factors". but it is kind of expensive
Risk is an assessment of loss, or the chance of loss. Offering any kind of service or product in finance carries a level of risk.
Any kind of crime involves risk. You can be charged with a crime. Right?
Some come with trackpads,but that's about it.
Flat keyboards are easier to clean, but they may be a bit more difficult to use. Flexible keyboards, which are very easy to clean, are also becoming available on the market.
With many options of keyboards out there the choice can be daunting. If you are using a tablet or TV for computer needs I would recommend a wireless keyboard. If you have any trouble with pain in your hands or numbness I would recommend a ergonomic keyboard. For finding out reviews on keyboard I find Amazon the best options. You can pretty much find all keyboards were real users rate them.
Any level of musical education is best for the Casio Privia keyboards. The keyboards are designed for beginners and for masters of the keyboard/piano. Piano lessons are available on the Casio website.
One can buy a keyboard tray online at website like Amazon. You can literally find any kind of keyboard part that you need. Parts for keyboards are very inexpensive.
Any kind of touch screen keyboard can be used with a desktop computer. The only requirement for a touchscreen keyboard is a touchscreen monitor. One of these monitors can be purchased for anywhere from $250 up to $700.
For the same reason the the "home"keys on some qwerty keyboards have raised projections: so that a user can orientate themselves by touch alone. This helps both sighted and sight impaired users of such devices.
Keyboards. It is hard to place piano, electric keyboards, harpsichord, etc into any other categoty so some just say keyboards. Some may argue something else(piano gets percussion because there are little hammers hitting the strings, and sometimes strings), but just go with keyboards.