Key West | Key West, Florida | Key Club | Francis Scott Key | Key Biscayne | Key Largo | John Key | Key Largo (film) | Key | Chroma key | Key West, Iowa | Key Stage 3 | Key of Solomon | Chroma Key | The Skeleton Key | Public key certificate | Key Stage 2 | Key (company) | Internet Key Exchange | The Glass Key | Philip Barton Key | key | Gold Key Comics | Cedar Key | The Glass Key (1942 film) | Telegraph key | Songs in the Key of Life | slack-key guitar | Ryan Key | product key |
In one form, product activation refers to a method invented by Ric Richardson and patented (US 5,490,216) by Uniloc where a software application hashes hardware serial numbers and an ID number specific to the product's license (a product key) to generate a unique installation ID.