Corrosion discharges direct current in 'bursts' which may be due to the disipation of corrosion products or the uneven breakdown of the 'polorisation film which they say consists of hydrogen bubbles which have formed a resistant layer at the cathodic interface between the metal and it's electrolyte.

You can see a similar effect when gasses come out of solution on the iside of a glass of beer or pop.
The bubbles do not appear evenly or burst regularly but it is a continuous process which might be described as 'noise'.
Ela and I investigated the possibility of controlling corrosion by electronically controlling the 'noise'.
It seems that there is scientific credibility in a process which reads the noise and sets equal and opposite potentials to smooth out the noise.
Several papers have been published relating to experiments that have demonstrated that this works and we have examined samples provided by Sobrel of Italy who are licenced to provide a corrosion control service using eletronic means.

This is no more 'magic' than cathodic protection and it seems that it has applications in tha splash zone which cathodic protection cannot address.

We can offer this as a solution where situations include corrosion noise which cannot be addressed by sacrificial anodes.
We are in the happy position of having the only way of monitoring the effects of electronic corrosion control in that the Alexander Cell is a corrosion cell and if the system stops the current in an Alexander Cell then it definitely stops corrosion... whatever the theory.
It is difficult to imagine and other short term method of measuring the effect as the wavelegths involved would defy normal monitoring techniques.