diff --git a/lib/coinatmradar/coinatmradar.js b/lib/coinatmradar/coinatmradar.js
index be4eec28..64660f4e 100644
--- a/lib/coinatmradar/coinatmradar.js
+++ b/lib/coinatmradar/coinatmradar.js
@@ -1,17 +1,16 @@
 const axios = require('axios')
 const _ = require('lodash/fp')
-const hkdf = require('futoin-hkdf')
 
 const pify = require('pify')
 const fs = pify(require('fs'))
 
 const db = require('../db')
-const mnemonicHelpers = require('../mnemonic-helpers')
 const configManager = require('../new-config-manager')
 const complianceTriggers = require('../compliance-triggers')
 const options = require('../options')
 const logger = require('../logger')
 const plugins = require('../plugins')
+const { getOperatorId } = require('../operator')
 
 const TIMEOUT = 10000
 const MAX_CONTENT_LENGTH = 2000
@@ -133,10 +132,10 @@ function sendRadar (data) {
 
 function mapRecord (rates, settings) {
   const timestamp = new Date().toISOString()
-  return Promise.all([getMachines(rates, settings), fs.readFile(options.mnemonicPath, 'utf8')])
-    .then(([machines, mnemonic]) => {
+  return Promise.all([getMachines(rates, settings), getOperatorId('coinatmradar')])
+    .then(([machines, operatorId]) => {
       return {
-        operatorId: computeOperatorId(mnemonicHelpers.toEntropyBuffer(mnemonic)),
+        operatorId: operatorId,
         operator: {
           name: null,
           phone: null,
@@ -157,7 +156,3 @@ function update (rates, settings) {
     .then(sendRadar)
     .catch(err => logger.error(`Failure to update CoinATMRadar`, err))
 }
-
-function computeOperatorId (masterSeed) {
-  return hkdf(masterSeed, 16, { salt: 'lamassu-server-salt', info: 'operator-id' }).toString('hex')
-}
diff --git a/lib/middlewares/operatorId.js b/lib/middlewares/operatorId.js
index 0dceb527..eeb7d6ac 100644
--- a/lib/middlewares/operatorId.js
+++ b/lib/middlewares/operatorId.js
@@ -1,34 +1,15 @@
-const pify = require('pify')
-const fs = pify(require('fs'))
-const hkdf = require('futoin-hkdf')
-
-const state = require('./state')
-const mnemonicHelpers = require('../mnemonic-helpers')
-const options = require('../options')
-const logger = require('../logger')
-
-function computeOperatorId (masterSeed) {
-  return hkdf(masterSeed, 16, { salt: 'lamassu-server-salt', info: 'operator-id' }).toString('hex')
-}
-
-function getMnemonic () {
-  if (state.mnemonic) return Promise.resolve(state.mnemonic)
-  return fs.readFile(options.mnemonicPath, 'utf8').then(mnemonic => {
-    state.mnemonic = mnemonic
-    return mnemonic
-  })
-}
+const { getOperatorId } = require('../operator')
 
 function findOperatorId (req, res, next) {
-  return getMnemonic().then(mnemonic => {
-    return computeOperatorId(mnemonicHelpers.toEntropyBuffer(mnemonic))
-  }).then(id => {
-    res.locals.operatorId = id
-    return next()
-  }).catch(e => {
-    logger.error('Error while computing operator id\n' + e)
-    next(e)
-  })
+  return getOperatorId('middleware')
+    .then(({ operatorId }) => {
+      res.locals.operatorId = operatorId
+      return next()
+    })
+    .catch(e => {
+      console.error('Error while computing operator id\n' + e)
+      next(e)
+    })
 }
 
 module.exports = findOperatorId
diff --git a/lib/new-admin/middlewares/session.js b/lib/new-admin/middlewares/session.js
index fbdf4465..41fc31a0 100644
--- a/lib/new-admin/middlewares/session.js
+++ b/lib/new-admin/middlewares/session.js
@@ -1,32 +1,21 @@
-const fs = require('fs')
 const express = require('express')
 const router = express.Router()
-const hkdf = require('futoin-hkdf')
 const session = require('express-session')
 const PgSession = require('connect-pg-simple')(session)
-const mnemonicHelpers = require('../../mnemonic-helpers')
 const db = require('../../db')
 const options = require('../../options')
 const { USER_SESSIONS_TABLE_NAME } = require('../../constants')
-
-const getSecret = () => {
-  const mnemonic = fs.readFileSync(options.mnemonicPath, 'utf8')
-  return hkdf(
-    mnemonicHelpers.toEntropyBuffer(mnemonic),
-    16,
-    { info: 'operator-id' }
-  ).toString('hex')
-}
+const { getOperatorId } = require('../../operator')
 
 const hostname = options.hostname
 
-router.use('*', session({
+router.use('*', async (req, res, next) => getOperatorId('authentication').then(({ operatorId }) => session({
   store: new PgSession({
     pgPromise: db,
     tableName: USER_SESSIONS_TABLE_NAME
   }),
   name: 'lamassu_sid',
-  secret: getSecret(),
+  secret: operatorId,
   resave: false,
   saveUninitialized: false,
   cookie: {
@@ -36,6 +25,7 @@ router.use('*', session({
     sameSite: true,
     maxAge: 60 * 10 * 1000 // 10 minutes
   }
-}))
+})(req, res, next))
+)
 
 module.exports = router
diff --git a/lib/operator.js b/lib/operator.js
new file mode 100644
index 00000000..63cbb768
--- /dev/null
+++ b/lib/operator.js
@@ -0,0 +1,10 @@
+const db = require('./db')
+const _ = require('lodash/fp')
+
+function getOperatorId (service) {
+  const sql = `SELECT operator_id FROM operator_ids WHERE service = '${service}'`
+  return db.oneOrNone(sql)
+    .then(_.mapKeys(_.camelCase))
+}
+
+module.exports = { getOperatorId }
diff --git a/migrations/1623413776161-create-operator-ids.js b/migrations/1623413776161-create-operator-ids.js
new file mode 100644
index 00000000..b7f27830
--- /dev/null
+++ b/migrations/1623413776161-create-operator-ids.js
@@ -0,0 +1,60 @@
+var db = require('./db')
+const pify = require('pify')
+const fs = pify(require('fs'))
+const hkdf = require('futoin-hkdf')
+
+const state = require('../lib/middlewares/state')
+const mnemonicHelpers = require('../lib/mnemonic-helpers')
+const options = require('../lib/options')
+
+function computeOperatorId (masterSeed) {
+  return hkdf(masterSeed, 16, { salt: 'lamassu-server-salt', info: 'operator-id' }).toString('hex')
+}
+
+function getMnemonic () {
+  if (state.mnemonic) return Promise.resolve(state.mnemonic)
+  return fs.readFile(options.mnemonicPath, 'utf8').then(mnemonic => {
+    state.mnemonic = mnemonic
+    return mnemonic
+  })
+}
+
+function generateOperatorId () {
+  return getMnemonic().then(mnemonic => {
+    return computeOperatorId(mnemonicHelpers.toEntropyBuffer(mnemonic))
+  }).then(id => {
+    return id
+  }).catch(e => {
+    console.error('Error while computing operator id\n' + e)
+    throw e
+  })
+}
+
+exports.up = function (next) {
+  const sql =
+    [
+      `CREATE TABLE operator_ids (
+        id serial PRIMARY KEY,
+        operator_id TEXT NOT NULL,
+        service TEXT NOT NULL
+      )`
+    ]
+  generateOperatorId()
+    .then(operatorId => {
+      const sql2 = [
+        `INSERT INTO operator_ids (operator_id, service) VALUES ('${operatorId}','middleware')`,
+        `INSERT INTO operator_ids (operator_id, service) VALUES ('${operatorId}','coinatmradar')`,
+        `INSERT INTO operator_ids (operator_id, service) VALUES ('${operatorId}','authentication')`
+      ]
+      db.multi(sql.concat(sql2), next)
+        .then(() => next())
+    })
+    .catch(e => {
+      db.multi(sql, next)
+        .then(() => next())
+    })
+}
+
+exports.down = function (next) {
+  next()
+}