FINGERPRINTS- help. What am I swiping left to reenter?

Can you be a little more specific as to what the issue is? Tell us what you are trying to do and what messages you are seeing on your screen.

Use Touch ID on iPhone and iPad - Apple Support

No idea. Try asking in the original thread where you saw that.

Eileen,

Any chance that you misread "left" instead of "lift"?

Eileen,

eileenfrombeverlyshores wrote:

When initializing (memorizing) thumb print I did lift....worked fine....next day didn't work......deleted & created new identity for thumb print......worked 1 day & then not next......do I have to continue this....deleting & re-establishing print each day???

No, you should not have to repeat the procedure every day.

Be sure to go through the help steps listed in the previously linked article:

Get help with Touch ID

1. Make sure that you're using the latest version of iOS.
2. Make sure that your fingers and the Home button are clean and dry.*
3. Cover the Home button completely. Don't tap too quickly, don't press down hard, and don't move your finger while Touch ID is scanning. Make sure that your finger touches the metal ring around the Home button.
4. If you're using a case or screen protector, make sure it doesn't cover the Home button or the surrounding ring. If it does, remove the case or screen protector and try again.
5. Tap Settings > Touch ID & Passcode and make sure that iPhone Unlock or iTunes & App Store is on. Also make sure that you've enrolled one or more fingerprints.
6. Try enrolling a different finger.
7. If you can't enroll any of your fingers, take your device to an Apple Retail Store, Apple Authorized Service Provider, or contact AppleCare for help.

* Moisture, lotions, sweat, oils, cuts, or dry skin might affect fingerprint recognition. Certain activities can also temporarily affect fingerprint recognition, including exercising, showering, swimming, cooking, or other conditions or changes that affect your fingerprint.