What is liflifeshield home security? LifeShield, according to Security Systems News, was “the first to bring a wireless DIY home security offering to the residential market” — a technological doppelgänger to other new-era home security systems like SimpliSafe.Why choose lifeshield smart security? With LifeShield, it became possible for homeowners to get advanced technology at affordable prices without installation fees, and no middle-men. LifeShield continued to establish itself as a pioneer in DIY smart home security.Is liflifeshield owned by adt? LifeShield was acquired by ADT in 2019, and the two companies merged in early 2020 to build on ADT’s 145-year-old brand. Together, the combined company is better positioned to provide the outstanding customer service that customers have come to expect along with expanded smart home security product and service offerings.Can i cancel my lifeshield at any time? You can cancel your LifeShield service at any time. The month-to-month contract agreement means that you won’t be charged any cancellation fees or otherwise penalized for ending service. Just give them 15 days advance notice to avoid being charged for the upcoming month.