...
| HostID Type | Security | Flexibility | Notes |
|---|---|---|---|
| Hostname | Low | High | Easy to move. |
| Username | Low | High | Easy to move. |
| IP address | Low | High | Easy to move. |
| Windows product ID | Low | High | Easy to move. |
| Harddisk | High | Low | Difficult to move. |
| BIOS | High | Low | Difficult to move. |
| Long (Unix-specific locking) | High | Low | Difficult to move. |
| Ethernet card | Medium | Low | Difficult to move; however, it is possible to change the MAC address, which somewhat compromises security. |
| HaspHL dongle | High | High | Dongles have superior security and flexibility; however, because the dongle is a physical device, it has the risk of being lost or broken. |
| Custom | High | High | Lets you develop your own algorithm to lock the application to custom hardware. |
| AWS Instance ID | High | High | May be somehow time-consuming. |