<s>
Helios	B-Application
Voting	I-Application
is	O
an	O
open-source	B-Application
,	O
web-based	O
electronic	O
voting	O
system	O
.	O
</s>
<s>
It	O
was	O
created	O
by	O
Ben	O
Adida	O
,	O
a	O
software	B-General_Concept
engineer	I-General_Concept
involved	O
in	O
other	O
projects	O
such	O
as	O
Creative	O
Commons	O
and	O
Mozilla	B-Application
Persona	I-Application
.	O
</s>
<s>
Once	O
an	O
election	O
is	O
created	O
,	O
Helios	O
provides	O
a	O
public	B-Application
key	I-Application
to	O
the	O
administrator	O
.	O
</s>
<s>
The	O
front-end	O
browser	O
code	O
is	O
written	O
in	O
both	O
JavaScript	B-Language
and	O
HTML	B-Language
,	O
while	O
the	O
back-end	O
server	O
code	O
is	O
written	O
in	O
Python	B-Language
.	O
</s>
<s>
Both	O
frontend	O
and	O
backend	O
are	O
free	B-Application
software	I-Application
.	O
</s>
<s>
A	O
voter	O
,	O
from	O
the	O
voting	O
roll	O
created	O
by	O
the	O
administrator	O
,	O
receives	O
an	O
email	O
with	O
the	O
voter	O
's	O
username	O
,	O
a	O
random	O
password	O
for	O
that	O
specific	O
election	O
,	O
a	O
URL	O
to	O
the	O
voting	O
booth	O
,	O
and	O
an	O
SHA-1	B-Algorithm
hash	I-Algorithm
of	O
the	O
election	O
parameters	O
.	O
</s>
