Answer · English
Why do my pulse readings fail when my hands shake?
Motion breaks the skin-color signal. Rest the phone on a table, hold still, use good light. Failed quality reads are discarded, never filed as fact. See #faq.
Answer · English
Motion breaks the skin-color signal. Rest the phone on a table, hold still, use good light. Failed quality reads are discarded, never filed as fact. See #faq.