
Here is a fairly inexpensive piece of high tech I highly recommend for any home. It is a relatively simple concept, but took a few generations to get it right... a residential compbination deadbolt lock.
The two big residential lock companies - Schlage and Kwikset both make similar models. But I have it on good authority from a locksmith (that sells both) that the Schlage is the superior unit. I have Schlage for most of my exterior locks and Kwikset for most of my interior doors. But this combination lock is great.
Generally people understand the combination lock versus the key - we all went thru the mental tradeoffs with our bike locks. However, the benefits are a bit more than not having to carry a key. Let me list them here:
The big generational break through was the twist locking mechanism. Earlier versions used the battery and a motor to drive the bolt. This took a lot of battery power - thus dead batteries. This current generation uses human power to move the bolt - the internal motor is only used to engage/disengage the twist-lock.Mine if over a year old now and is still working on the original batteries.
I keyed my dead-bolt to the same as another Schlage lock - so I bettered the proposition with a single key (for me). But the kids and some others don't have any key.
Now you can go a step further by adding the Schlage LiNK system which integrates with home automation. This lets you remotely control and monitor access to the home from any Internet enabled computer and some cell phones. It requires Z-Wave enabled Schlage wireless locks and can work in conjuction with Z-Wave enabled lights and other components such as the Trane Remote Energy Management Thermostat or Schlage cameras. What is means is you can be notified electronically when the key is turned or for the turning of they to automatically activate lights and temperature settings. Kwikset has a similar solution that integrates with Control4.
The idea is you deadbolt can become IP enabled. Not only can it be remotely controlled, but you can set up a schedule or check events (what time did the kids get home?). It can be accessed from a web browser or even a cell phone. This is probably a little much automation for even me, but I could see where it could be useful; particularly the logging. The Schlage LiNK family includes Zigbee wireless devices for light controllers, wireless cameras, and thermostats. There is a fairly broad list of Z-Wave compatible manufacturers. To start off, get a Schlage wireless starter kit with one deadbolt and the Z-wave receiver, and software and then add additional components as desired.