Semmelweis Scanner – User Guide v22.03
30
6.4. Visitor mode
In the case of
Visitor
mode there is no need for RFID identification. The system is triggered by
the insertion of the right hand. In this mode no personal information is recorded. All the
aforementioned operation options (i.e. Handrub, Handwash) can be used in
Visitor
mode. It can
be a useful solution for large crowds, entrance halls and conferences.
Visitor
mode can be
switched on via the Reporting System.
7. Interpreting the results
The Semmelweis Scanner is primarily an IT tool, relying on cutting-edge software technologies
to provide an objective feedback on the quality of hand hygiene. The Product employs state-of-
the-art image processing algorithms, relying on Artificial Intelligence methods, and is able to
create new theoretical results. However, this means that the results shown are based on the
indirect evidence of the dye coverage. In order to provide the highest quality evaluation, the
HandInScan team has been committed to verifying all aspects of the Product. These efforts have
been documented and disseminated through peer-reviewed scientific publications. (Listed in
the Appendix.) Should you have a particular interest in any aspect of the validation, please
contact the Manufacturer.
7.1. Microbiological validation
We studied the correlation between microbiology results and software-based evaluation of the
Semmelweis Scanner. For the experiment, artificial hands were fabricated from plastic and
covered with cow skin. This hand was soaked into high concentration (0.5 McF)
Staphylococcus epidermidis
suspension (
S. epidermidis
is part of the normal flora on human
hands and is non-pathogenic). In each experiment one selected hand region was treated with
alcohol-based trainingrub, containing a fluorescent dye. Digital image of the hand was recorded
with the Semmelweis Scanner. After recording the picture, the artificial hand was stamped into
a blood agar plate (Fig. 4).
