Updated in 2563 : on 2020 : 2 : 24 : Q : q ;

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1.414213562373095048801688724209

1.732050807568877293527446341505

QR Code; e.g.

QR Code ( using 3 ro, using 4 ro ) within a defined square ... , remark: QR Code is ZCS _ * technology and it is beyond ( Barcode, Barcode2D) because WHEN holes are defined by strings ( e.g. Lights As Sheets ) , NOT ONLY color codes BUT ALSO directional can be used, using, utilized, ... , a.k.a. QR Code;

using ( QR Code, QR Code, QR Code), also see: qGTSU;

quantum jumping, a.k.a. sliding, e.g. looking at mirror;

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