Use 'in other words' to clarify complex ideas or jargon in simpler terms for better understanding. The device uses biometrics for authentication, in other words, it can recognize your fingerprint.
Pro Tip 2/3
Restatement for Emphasis
It's often used to restate a point more clearly or emphasize it by presenting it in a new way. He's not interested in attending the meeting, in other words, he won't be there.
Pro Tip 3/3
Signal for Paraphrase
Signals that you're about to paraphrase your own or someone else's words for clarity. The weather forecast is dire, in other words, expect heavy rain all weekend.