The device usually functions by means of transmitting sound from the baby's room to a portable receiver that can be conveniently placed inside a pocket or strapped around the waist. People with excellent hearing can rest assured that their infants' cries will be heard, even if they're in another part of the house. Because of these occurrences, a lot of people have made it a point not to mention any private or confidential information while the baby monitor is switched on. Interference with cordless phones and wireless routers is also a common problem. Every now and then, your baby monitor may compete with these wireless devices for better signal reception. The lifestyle and the type of work that you have to do around is also another important factor to consider, especially if your work requires you to be farther away from your baby s room and you may need a monitor that covers the range, particularly a portable one. Always remember that whether you would prefer an audio, video or sensory monitor, the clarity of sound and video of your unit should be of very good quality for you to effectively monitor your child. This feature allows parents to carry the device around without much effort. If you intend to take the receiver anywhere in the house for extended periods of time, test out the attachment method just to be sure that it's durable enough to endure daily usage. In addition, you also need to check the battery life and power source. But the cardinal sign of obstructive apnea in babies is restlessness. Another type of apnea is central apnea. This is usually caused by defect in the part of the brain the controls breathing. In babies, this could be a congenital defect. Central apnea is very rare in adults but quite common in babies especially those who were born prematurely. With the help of an Internet capable computer, parents can now access their baby cameras anywhere at any time. Most of the time however, this system is used to keep tabs on your nanny, caretaker or babysitter instead of the baby. You may want to make sure that whoever is in charge of your baby at that moment in time is giving his or her utmost care and love.