<s>
Aperture	B-Application
Hand	I-Application
Lab	I-Application
is	O
a	O
virtual	B-Application
reality	I-Application
(	O
VR	O
)	O
game	O
developed	O
by	O
Canadian	O
studio	O
Cloudhead	O
Games	O
and	O
published	O
by	O
Valve	O
,	O
released	O
for	O
Windows	O
on	O
June	O
25	O
,	O
2019	O
.	O
</s>
<s>
It	O
is	O
a	O
tech	O
demo	O
that	O
showcases	O
the	O
functions	O
of	O
the	O
hand	O
,	O
knuckle	O
,	O
and	O
finger	O
tracking	O
technology	O
used	O
by	O
the	O
Valve	B-Device
Index	I-Device
VR	O
headset	O
.	O
</s>
<s>
The	O
game	O
is	O
set	O
in	O
the	O
Portal	B-Application
universe	O
.	O
</s>
<s>
The	O
gameplay	O
consists	O
of	O
several	O
tests	O
conducted	O
by	O
the	O
"	O
personality	O
cores	O
"	O
seen	O
in	O
The	B-Application
Lab	I-Application
.	O
</s>
<s>
Since	O
the	O
summit	O
,	O
Cloudhead	O
has	O
provided	O
tech	O
demos	O
for	O
every	O
major	O
SteamVR	O
innovation	O
,	O
with	O
Aperture	B-Application
Hand	I-Application
Lab	I-Application
being	O
focused	O
around	O
the	O
Valve	B-Device
Index	I-Device
's	O
finger	O
tracking	O
.	O
</s>
