The Genius Technology From 1906, That Would Still Work Today

Ad for Surety Alarm Co. in the February 17, 1906 issue of the Literary Digest

Ad for Surety Alarm Co. in the February 17, 1906 issue of the Literary Digest

No batteries needed here. Looking back at past technology can not only be fun, but it can help give us a picture of what life was like in the past, as well as let us use their creativity for the future. This creative alarm had a single purpose, to alert you when the door opened. According to the ad, it will "ring violently on slightest pressure". In 1906 this modern technology would of set you back $1, which included shipping and handling (an early variation on Amazon Prime perhaps?).