Depends on the environment. My assumption is that the venue is sufficiently crowded that the tamperer would never be alone with the drink, and the main protection is their risk of being spotted.
A tamper proof solution would likely be far more costly to implement.
I suppose the rapist could still palm an eyedropper and aim it into the straw, but this has got to be a lot more difficult than dropping a pinch of powder over an open cup. Doable, but difficult. Drops on the lid would be suspicious if he misses. Also, thin straws would make this even more difficult.
Yeah, I don’t think lids do much without a tamper-evident seal.
Depends on the environment. My assumption is that the venue is sufficiently crowded that the tamperer would never be alone with the drink, and the main protection is their risk of being spotted.
A tamper proof solution would likely be far more costly to implement.
I suppose the rapist could still palm an eyedropper and aim it into the straw, but this has got to be a lot more difficult than dropping a pinch of powder over an open cup. Doable, but difficult. Drops on the lid would be suspicious if he misses. Also, thin straws would make this even more difficult.
You likely want straws that are bend.