This will be a dump of various bits and pieces of miscellaneous decking knowledge.

Alternative representation and additional information is also available at the houserules article.

1. Canonically the Matrix requires a subscription to use. Because you're a fly-by-night shadowrunner who refuses to pay the corps their nuyen, not that you have a SIN to pay with, *any* intrusion into the Matrix is considered a hostile one. This means as soon as you step foot into it the tally (security/alert) level begins to climb.

2. Exits themselves (SANs) can be encrypted and there are several bugs on how it is documented.

• locate host blah
• → Your search returns the address blah.
• logon blah
• → You fail to gain access to the host.
• # The target room has an AccessScramble value, which blocks remote login. But it could be the source room blocking, so…
• analyze access
• → There is nothing out of the ordinary about that subsystem.
• # Well, now what? (This is what usually keeps people from logon. But the source room has no encryption. So decker has bright idea:)
• analyze blah
• → Analyze what? (That doesn't work…)
• help decrypt
• → helpfile shows no ability to decrypt exits/SANS exists
• # But finally if you just do it anyway:
• decrypt blah
• → You successfully decrypt that SAN.

So, the room is not the SAN, the exit is. An access-encrypted room can prevent movement in, forcing you to decrypt it blind.