Opening a package without anyone knowing can be useful when you want to surprise someone or keep a gift a secret. One way to do this is by using a hairdryer to heat the glue that holds the packaging together.  Once the glue is softened, you can carefully open the package without showing any signs of tampering. Another way is to use a thin, sharp blade to cut along the edge of the packaging. Be careful not to damage the contents inside the package, and always remember to act responsibly and ethically.