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Proceed to install a grab bar inside the shower, on a tiled wall. First, roughly determine the bar's location. While a horizontal grab bar is excellent for moving forward and backward in the shower, consider mounting it diagonally if there will be a shower seat. A diagonal position allows a person to use the bar to lower themselves to the seat and gain leverage for getting back up. Use a stud finder to locate and mark the nearest stud; try to have at least one end of the grab bar attached to a stud. If you cannot find a stud in the desired position, you will need to use a specialized anchor (like the SecureMount type shown). Ensure you're prepared to use a glass and tile drill bit and set your drill to a slow speed when working with tile to prevent cracking.