電でん子しキー

noun

electronic key

Refers to a physical device or card used to unlock doors, start cars, etc., often via radio signal or chip.

• このマンションは電でん子しキーで入はいります。

  You enter this apartment building with an electronic key.

• 車くるまの電でん子しキーをなくしてしまった。

  I lost my car's electronic key.

noun

electronic cipher; digital encryption key

Used in cryptography and IT contexts for a digital key that encrypts or decrypts data. Less common than sense 1 in everyday language.

• 通つう信しんは電でん子しキーで暗あん号ごう化かされている。

  The communication is encrypted with an electronic cipher.