Re: Electronic locks or automatic doors?
From: R Philip Dowds (
Date: Sat, 26 Oct 2013 03:36:56 -0700 (PDT)
Electromechanical, programmable entry lock sets are getting cheaper and more 
common for all sorts of uses.  You can have either the keypad variety or the 
badge reader variety tied to an electric strike (the part in the door jamb); 
the kind tied to the latch set in the door is harder and more expensive to 
install.  One big advantage of programmable is that you can change the guest 
passcode on a weekly or monthly basis — or deactivate a particular badge or fob 
— which means that you don't have spare keys out and about in the possession of 
who knows whom.  Cornerstone does not have a system like this, but would 
probably like it if it did.

Auto-operators on swing doors are more problematic.  To be safe, they must 
operate slowly, which is a nuisance for the able-bodied; they are doubly a 
nuisance in a pair sequence, like the inner and outer door of a vestibule 
space.  If you try to operate them manually, they often require considerable 
force.  Unless you are trying to serve the mobility-impaired who are incapable 
of operating an ADA-compliant swing door, you might want to de-prioritize the 
auto-operator thing.  Personally, what I find more useful at a locked entry is 
an adjacent table-height surface on which to set burdens while I operate the 

R Philip Dowds AIA
Cornerstone Village Cohousing
Cambridge, MA

On Oct 25, 2013, at 7:46 PM, "Terry (Sarito) Whatley" <terry.whatley [at]> wrote:

> Do you have electronic locks (keyless entry) on your common house doors?
> Do you have automatic doors for handicap access?
> We have a proposal on the agenda to add auto open doors to our common house
> and would like to know of other's experience.
> Thanks,
> Sarito
> Nevada City Cohousing
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