In most bookstores, newsagents, and video stores, adult material is clearly identified and placed out of reach.
Videos have film classifications for sale or rental.
On the Internet, there's no shopkeeper to keep your child away from adult material. Although representing a relatively small proportion of the Web, be aware sites with adult content are easily found. Although clearly unsuitable for children, the content may well be legal. Some adult sites may issue a warning before allowing access. Using the Netscape Navigator 3 browser, a complete key in the bottom left hand window denotes a secure site - it appears as a broken key if not.