PayWave & PayPass deletion via RFID antenna kill
remove RFID from a payment card with a single drilled hole
(tags: rfid banking cards debit-cards credit-cards)
Fast Forward Labs: Probabilistic Data Structure Showdown: Cuckoo Filters vs. Bloom Filters
Nice comparison of a counting Bloom filter and a Cuckoo Filter, implemented in Python:
This post provides an update by exploring Cuckoo filters, a new probabilistic data structure that improves upon the standard Bloom filter. The Cuckoo filter provides a few advantages: 1) it enables dynamic deletion and addition of items 2) it can be easily implemented compared to Bloom filter variants with similar capabilities, and 3) for similar space constraints, the Cuckoo filter provides lower false positives, particularly at lower capacities. We provide a python implementation of the Cuckoo filter here, and compare it to a counting Bloom filter (a Bloom filter variant).
(tags: algorithms probabilistic approximation bloom-filters cuckoo-filters sets estimation python)