<s>
Reminder	B-Application
software	I-Application
is	O
a	O
type	O
of	O
time	B-Application
management	I-Application
computer	B-Application
software	I-Application
that	O
is	O
designed	O
to	O
alert	O
the	O
user	O
of	O
important	O
events	O
that	O
they	O
have	O
input	O
to	O
the	O
program	O
.	O
</s>
<s>
Most	O
programs	O
provide	O
a	O
calendar	B-Application
or	O
list	O
view	O
of	O
events	O
,	O
as	O
well	O
as	O
a	O
reminding	O
technique	O
.	O
</s>
<s>
Often	O
the	B-Application
software	I-Application
comes	O
with	O
a	O
set	O
of	O
pre-installed	O
events	O
(	O
such	O
as	O
holidays	O
)	O
and	O
allows	O
the	O
user	O
to	O
create	O
custom	O
events	O
.	O
</s>
<s>
Users	O
subscribed	O
to	O
those	O
services	O
usually	O
receive	O
their	O
reminders	B-Application
by	O
email	O
or	O
SMS	O
.	O
</s>
<s>
Context-aware	O
reminder	O
systems	O
can	O
set	O
reminders	B-Application
based	O
on	O
the	O
user	O
's	O
current	O
location	O
.	O
</s>
