For decades, these basic forms of biometric data have been used to grant access to secure areas. For example, employees are often required to scan their face, eyes, palm, or thumb to gain access to high-security areas.

Similar to employers, today's landlords are using biometric data for security. However, tenants are concerned that landlords will sell their data to marketers.

Today, all data is valuable, including real estate data. Although landlords are using biometrics to increase security, tenants aren't willing to give up their privacy for tighter security.

Landlords are Embracing Biometric Security

In an effort to tighten up security, landlords across the U.S. have been installing biometric door locks and facial recognition cameras to grant entry only to authorized tenants. They've also been installing basic smart locks on tenants' doors, some of which require a thumbprint for entry.

Landlords have a right to secure their property, but many tenants think biometric security infringes on their right to privacy. Those tenants have a point. Tenants shouldn't have to give up their biometric data to enter their own home. Landlords have no business knowing when a tenant comes and goes from their own home.

Worse, electronic key fobs track a tenant's location and some tenants are worried their landlord will sell their data to advertisers. In the end, biometric security might not be the best solution.