2. Basis of Presentation and Significant Accounting Policies: PASSUR Network (Details) - USD ($)		3 Months Ended	9 Months Ended
Jul. 31, 2021	Jul. 31, 2021	Jul. 31, 2021
Impairment Of Long Lived Assets, Held For Use (Rounded)			$ 21,000
PASSUR Network Parts Used in Repairs		$ 0	9,300
Depreciation of PASSUR Network costs		$ 0
PASSUR NETWORK, Net (Rounded)	$ 0
Passur Network 1
Impairment Of Long Lived Assets, Held For Use (Rounded)			$ 3,565,000

Amount of expense charged against earnings to allocate the cost of tangible and intangible assets over their remaining economic lives, classified as other.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

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