What are the downsides of smart door locks?

What are the downsides of smart door locks includes several practical and security considerations. First is battery dependence, smart locks require AA batteries that need replacement every 6 to 12 months, and if batteries die you may be locked out unless you have backup key or emergency power method like 9 volt battery terminals. Second is reliance on technology, WiFi, Bluetooth, and app connectivity can fail, causing delayed notifications or inability to remote unlock if internet down. Third is higher cost, smart locks cost $150 to $300 versus $30 for traditional deadbolt. Fourth is potential hacking and cybersecurity risk, if app account uses weak password or lacks two factor authentication, hacker could potentially unlock door remotely, though reputable brands use encryption. Fifth is complexity, setup requires app, firmware updates, and some troubleshooting, not as simple as mechanical lock. Sixth is compatibility issues, some smart locks do not fit all door thicknesses or require specific backset. Seventh is lockout risk due to forgotten codes or phone dying. Eighth is privacy, some locks log entry data in cloud. Ninth is weather sensitivity, cold can drain batteries faster. Finally, traditional locksmiths may be less familiar with smart locks for repair. Despite downsides, most are manageable with good maintenance.