Electronic ignition replaces the mechanical ignition points and condenser built into the distributor and uses a rotating disc to trigger a sensor that activates the coil. There is no maintenance required and the module is resistant to dust or moisture ingress. I prefer to use Lumenition equipment as many of my customers have used this equipment over the years witout issue.
The same cannot be said about some of the competitive kits, however. A short while ago the market was flooded with cheap ignition sets which, whilst significantly cheaper than Lumenition, suffered high levels of failure that in some cases, left cars stranded by the roadside.
I can always find a discrete place to "conceal" the module from view as there is no requirement to be able to easily access the unit in service. It is also possible to install an anti-theft switch in a concealed location in order to improve vehicle security.