We tested monitors daily over a period of several months, in three houses: one nearly 100 years old with plaster walls, plus a newer home with standard drywall construction, and a two-level 1960s home with a driveway on another level from the kids’ rooms. We tried the cloud-based monitors with two routers to be sure that any connection issues were with the monitors themselves and not the Internet connection.
Your phone might not have great battery life. Many parents who use a wifi baby monitor come to the realization that their smart phone battery life isn't so great when they are streaming a live video and audio feed from their baby monitor. If you have a newer iPhone or Android device, it will probably do pretty well, but if you have an older phone the batter is probably a bit weaker already and you will notice your battery life dropping pretty quickly during use. So definitely consider battery life and charging options for your smart phone when you are choosing between a self-contained versus wifi baby monitor.
Security: Whether you’re skeptical of people hacking baby monitors or deeply concerned about it (and there are stories!), the bottom line is that some monitors are at more risk than others. A Wired story from 2015 refers to security firm Rapid7’s findings that Wi-Fi–enabled monitors were particularly vulnerable. We figured people would prefer the not-hackable type, and we talked to a security expert about how to protect your privacy.
Many of the baby monitors we've tested are internet-connected, letting you watch infant with your phone or tablet through an app just as if you were checking a home security camera. Because of this, you might not actually get a standalone display to go along with the camera. They aren't out of the question, however; some camera-only baby monitors offer viewers as an add-on or in a bundle. And if there aren't any available, you can simply get an inexpensive tablet like the Amazon Fire to use as a dedicated viewer.
Security is a mixed bag, especially as baby monitors get more high tech. If tech giants like Apple and Google run into security flaws, high-tech baby monitors are sure to experience similar problems. However, some less high-tech baby monitors aren't secure, either, and many suffer from signal interference. We've checked each company's security policy to find the most secure options for you.
Wireless encryption: This ensures that no one else can tap into your monitor’s “feed” and see what’s going on in your house. WiFi-enabled monitors are great for portability and range, but may be more susceptible to hacking. If you go this route, be sure to secure your home wireless network and keep the monitor’s firmware updated. Otherwise look for digital monitors with a 2.4 GHz FHSS wireless transmission.