noun which may take the genitive case particle 'no'
unidentifiable; indistinguishable; unrecognizable
Describes something that cannot be identified or told apart, often used in formal or technical contexts.
その遺体は損傷が激しく、識別不能だった。
The body was so badly damaged that it was unidentifiable.
この二つのサンプルは見た目が識別不能だ。
These two samples are visually indistinguishable.