Table 6 Security features comparison.

Protocol	N1	N2	N3	N4	N5	N6	N7	N8	N9	N10	N11	N12	N13	N14	N15
¹⁷	√	√	√	√	√	√	√	×	√	√	×	√	√	√	√
³⁰	√	√	√	√	√	√	√	×	√	×	×	√	√	√	√
³¹	×	√	√	√	√	√	×	×	×	×	√	√	√	√	√
⁹	×	√	√	√	√	√	√	√	√	√	×	√	√	√	√
³²	×	√	√	√	√	√	√	√	√	√	√	√	√	√	×
PIA	√	√	√	√	√	√	√	√	√	√	√	√	√	√	√

N1-Physician User Anonymity, N2-Session key Secrecy, N3-Three-factor security, N4-Mutual authentication, N5-Mobile Device Node Capture And Password Guess Attacks, N6-Gateway Simulation Attack, N7-Physician User Impersonation Attack, N8-Sensor Devices Impersonation Attack, N9-Desynchronization Attack, N10-Resist Insider privilege attack, N11- Capture Attacks on Medical Sensor Device Nodes, N12-Replay attacks,N13-Man-in-the-middle attack, , N14-Non-traceability. N15-Internal attack.

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