Summer is finally here. The kids are out of school, the grill is getting a workout, and you're probably planning a weekend getaway—or just enjoying some lazy afternoons by the pool. But there's one thing that can turn that summer relaxation into stress: worrying about whether your home is safe while you're away. Whether it's a long Fourth of July weekend or a week-long vacation, an empty house is vulnerable. The good news is that modern security tech has gotten smart enough to give you real peace of mind—without flooding your phone with useless alerts every...