Using your phone as a tool for recruiting is becoming increasingly difficult.

According to new research, people have stopped answering their phones because of the high volume of machine-based fraudulent calls.

Currently, almost of 30% of all calls to mobile phones are made by machines and robots.

Researchers predict the rate of unwanted calls will increase to nearly 45% of calls in 2019.

Here’s the surprising part—the rate of unwanted call was only 3.7% in 2017.

Why the drastic increase? Because scammers are getting better at tricking people to answer their phones through techniques such as “neighborhood spoofing” where the inbound caller ID looks similar to your phone number.

Once burned, twice shy.

Unless the call is from someone who is a known contact, many people are choosing not to answer.

It’s important to diversify your recruiting techniques as the technology landscape changes.