A cultivator is any of several types of farm implement used for secondary tillage.
What is two-step verification? Two-step verification (a.k.a. two-factor authentication, multi-factor authentication, or MFA) is a financial industry standard in which a user is required to provide additional verification after signing in. Often a verification code is provided to the user via text message or automated phone call.
A multi-step authentication scheme which requires two physical keys, or two passwords, or two forms of biometric identification is not two-factor, but the two steps may be valuable nonetheless. A good example of this is the two-step authentication required by Gmail.